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The collet inside diameter is 3/8 inch. The minimum size hole this extension will allow you to drill is 13/16 inch. The forstner bit extension gives you additional 5-5/8 inches of reach to bore deeper into your projects.
Please note that some forstner bit manufacturers produce bits that say 3/8 inch shank size when in fact they are not. To remedy this issue we have developed a heavy duty steel extension that allows you to secure a 3/8 inch shank forstner bit into the end collet. It is designed to be used with forstner bits only. The extension can be used with forstner bits on drill presses, lathes with a drill chuck installed drill chuck not included or with a power drill.

Bit extension for impact driver is made of stable and strong chrome vanadium steel with excellent concentricity. The beautiful red coating can provide secondary protection to the metal, which is more durable and more protective. The quick release design makes your life and work more efficient, convenient and fast.
The package contains: 2 inch, 4 inch and 6 inch quick release magnetic drill bit holder with 1/4” hex shank. At this time, pneumatic drill, electric screwdriver, you can only use 3 lengths of magnetic extension drill rods to provide you with efficient and convenient Service. The magnetic force cannot be transmitted, in one step, and the bit head cannot be made magnetic! Drill bit extender suitable for pneumatic screwdriver, manual screwdriver and all 1/4-inch drive bits tool. The three lengths are highly versatile and easy to replace.





1/4", 3/8" & 1/2" square drive - equipped with retention ball to prevent dropping, while the chamfered edges will ensure a secure fit onto the socket. Enjoy our quality 9-piece saving package - the 3, 6 & 12-inch impact driver socket adapters, made of heat-treated Chrome Vanadium steel and organized in a convenient holder.


1. Fulton
#ad
Carpentry and Construction, Fulton 6 inch Long Forstner Bit Extension for Adding Over 5-5/8 inches of Drilling Depth to Your Forstner Bit. for Wood Turners, Furniture
#adFulton #ad - Drilling with forstner bits to achieve a flat bottom hole or to start a deep hole turning project like on a larger vase or vessel is essentially impossible with a standard length forstner bit. This will help you create larger diameter starter holes or help when you need to drill in just a little further than the standard bit length will allow.The collet inside diameter is 3/8 inch. The minimum size hole this extension will allow you to drill is 13/16 inch. The forstner bit extension gives you additional 5-5/8 inches of reach to bore deeper into your projects.
More information #ad
If you measure your bit shank and it is 3/8 inch, your bit should fit once the set screws are loosened. Forstner bits and Machinery shown in pictures are NOT included. Contractors use the extension when they need to bore deep holes for running cables or wires and they also use it for joining larger timbers. Please note that some forstner bit manufacturers produce bits that say 3/8 inch shank size when in fact they are not. To remedy this issue we have developed a heavy duty steel extension that allows you to secure a 3/8 inch shank forstner bit into the end collet. It is designed to be used with forstner bits only. The extension can be used with forstner bits on drill presses, lathes with a drill chuck installed drill chuck not included or with a power drill.
Brand | Fulton #ad |
Manufacturer | Fulton Woodworking Tools and Accessories #ad |
Part Number | 927 |
More information #ad
2. Mellbree
#ad
Mellbree 3-Pack Quick Release Magnetic Drill Bit Holder Tool Kit with 1/4” Hex Shank for All 1/4-Inch Drive Bits Three Lengths 2", Drill Bit Extension, 4" and 6"(Magnetic force does not transmit)
#adMellbree #ad - Whether it is life or work, there will always be some narrow or difficult to operate environments. Magnetic bit holders with universal 1/4” hex shank has built-in strong magnetism to better stabilize the drill bit, and will not drop the drill bit. It is very suitable for working in some places that need to extend the head.Bit extension for impact driver is made of stable and strong chrome vanadium steel with excellent concentricity. The beautiful red coating can provide secondary protection to the metal, which is more durable and more protective. The quick release design makes your life and work more efficient, convenient and fast.
More information #ad
The location of the magnetic force:The connection between the extension rod and the bit. In order to meet the needs of various environments, namely: 2 inch/60mm, this bit holder tool kit combines three different lengths, 4 inch/100mm, 6 inch/150mm. The package contains: 2 inch, 4 inch and 6 inch quick release magnetic drill bit holder with 1/4” hex shank. At this time, pneumatic drill, electric screwdriver, you can only use 3 lengths of magnetic extension drill rods to provide you with efficient and convenient Service. The magnetic force cannot be transmitted, in one step, and the bit head cannot be made magnetic! Drill bit extender suitable for pneumatic screwdriver, manual screwdriver and all 1/4-inch drive bits tool. The three lengths are highly versatile and easy to replace.
Brand | Mellbree #ad |
Manufacturer | Mellbree #ad |
Part Number | AA-00-US-genmai |
More information #ad
3. Drill America
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DWDA/CX61/8 1/8" x 6" High Speed Steel Aircraft Extension Drill Bit, DWDA/C Series, Drill America
#adDrill America #ad - Round shanks allow use with a wide variety of tool holding systems. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge.More information #ad
When run in a counterclockwise direction right-hand cut spiral fluted tools evacuate chips up and out of the cut to reduce clogging. Manufactured to national aerospace standard 907.Brand | Drill America #ad |
Manufacturer | Drill America #ad |
Height | 2 Inches |
Length | 6 Inches |
Weight | 2 Pounds |
Width | 4 Inches |
Part Number | DWDA/CX61/8 |
Model | DWDA/CX61/8 |
More information #ad
4. DEWALT
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Impact Ready, DEWALT Drill Bit Holder Extension, 6-Inch DWA6HLDFT
#adDEWALT #ad - Accepts 1" screw driving bits and all 1/4" hex-shank accessories for drilling and driving. Locking mechanism for accessory retention. Slim 11mm profile for fastening and drilling in tight spaces. Magnetism for Fastener retention.More information #ad
Brand | DEWALT #ad |
Manufacturer | Dewalt #ad |
Height | 8.75 Inches |
Length | 1.87 Inches |
Width | 0.5 Inches |
Part Number | DWA6HLDFT |
Model | DWA6HLDFT |
More information #ad
5. Irwin Tools
#ad
Quick Change, 6-Inch 4935704, IRWIN Tools SPEEDBOR Magnetic Bit Holder
#adIrwin Tools #ad - These bit holders use the Lock-n-Load system for 1-handed quick release. 1/4-inch quick-change range now holds insert bits; magnetic for holding.More information #ad
6" overall length. Bit extension has a patented jaw design with 6-flatted shanks to hold bits securely. Each irwin quick-change bit holder features a chrome plated sleeve with a carbon steel body.Brand | Irwin Tools #ad |
Manufacturer | Irwin Tools #ad |
Height | 0.5 Inches |
Length | 8.5 Inches |
Weight | 0.23 Pounds |
Width | 1.9 Inches |
Part Number | 4935704 |
Model | 4935704 |
More information #ad
6. IVY Classic
#ad
1/Card, IVY Classic 10700 6-Inch Wood Spade Bit Extension, High-Carbon Steel
#adIVY Classic #ad - Ideal for use with wood spade bits. Length: 6-inch, shank: 1/4-inch quick-change power hex. Extends any 1/4-inch round or hex shank bit an additional 6 inches, Swift Bore Registered Trademark.More information #ad
High-carbon steel construction, precision ground and polished. Two set screws and hex key included. To fasten the shank in place, use the hex key to tighten these screws.Brand | IVY Classic #ad |
Manufacturer | IVY Classic Industries, Inc. #ad |
Height | 0.6 Inches |
Length | 6 Inches |
Width | 0.6 Inches |
Part Number | 10700 |
Model | 10700 |
More information #ad
7. LEXIVON
#ad
3", 6", and 1/2" Drive, 3/8", Adapt Your Power Drill To High Torque Impact Wrench LX-106, and 12" Extension Bit With Holder | 1/4", LEXIVON 9-Piece Impact Grade Socket Adapter Set
#adLEXIVON #ad - One set of socket adapters, unlimited uses – the ¼” hex shank will fit all quick Change systems and standard drill chucks, which is ideal for both professionals and DIYers.1/4", 3/8" & 1/2" square drive - equipped with retention ball to prevent dropping, while the chamfered edges will ensure a secure fit onto the socket. Enjoy our quality 9-piece saving package - the 3, 6 & 12-inch impact driver socket adapters, made of heat-treated Chrome Vanadium steel and organized in a convenient holder.
More information #ad
Get your set of adapters with zero risk – meet & exceeds ansi the american national Standard Institute and backed by our Lifetime Limited Warranty for your complete peace of mind. Active rust & corrosion protection since they are treated with a rust-proof Black Phosphate coating for enhanced durability under any circumstances.Brand | LEXIVON #ad |
Manufacturer | LEXIVON #ad |
Height | 0.58 Inches |
Length | 11 Inches |
Width | 2.9 Inches |
Part Number | LX-106 |
Model | LX-106 |
More information #ad
8. DEWALT
#ad
6-Inch DW1588, DEWALT Spade Drill Bit Extension
#adDEWALT #ad - Cutting spurs provide optimum hole finish. Heavy-duty full length heat treat shank provides maximum durability of the drill bit against bending and breaking. Hang hole allows for bit storage and wire pulling. 1/4-inch hex shank prevents slipping and fits all 1/4-inch quick change systems.More information #ad
Brand | DEWALT #ad |
Manufacturer | Dewalt #ad |
Height | 0.56 Inches |
Length | 7.75 Inches |
Weight | 0.18 Pounds |
Width | 1.87 Inches |
Part Number | DW1588 |
Model | DW1588 |
Warranty | Satisfaction guarantee |
More information #ad
9. BOSCH
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BOSCH EX1006 7/16 In. x 6 In. Straight Shank Extension
#adBOSCH #ad - X 6 in. Rugged, high-quality materials to withstand tough concrete applications. 6 in. Dimensions 7/16 In. Straight extension shank. Maintains bit integrity at impact point.More information #ad
Brand | BOSCH #ad |
Manufacturer | Bosch #ad |
Height | 0 Inches |
Length | 0 Inches |
Weight | 0.55 Pounds |
Width | 0 Inches |
Part Number | EX1006 |
Model | EX1006 |
More information #ad