10 Best Router Collet Extension of December 2025

• Made of heavy-duty steel.
• 1/2-Inch Shank for 1/2-Inch collets.
• 3-15/32-Inch overall length.

CMT

• Please clamp the shank in right place, don't clamp the shank too short or it will getting bent. Easy to use, place the router collet extension shank in the 1/4" router collet and the router bit shank in the extension collet and tighten both.
• Give your router bits an additional 2-1/4" when you extend them through the router table top with our router collet extension.
• Eliminate the dangerous temptation of withdrawing the shank from the collet in order to raise the bit and to full depth of cut.
• The router collet extension makes it possible to use all diameters of 1/4" shank bits safely.
• Use with 1/4" collet routers and 1/4" shank router bits only.

• Shank Diameter: 1/4", Accept Shank Size: 1/4" Shank, Extend Length: 3"
• Easy to use, place the router collet extension shank in the 1/4" router collet and the router bit shank in the extension collet and tighten both
• Eliminates the dangerous temptation to pull the tool holder from the collet, and extends the drill bit to provide a full depth of cut instead of a short-time router tool
• Made of hard steel material, high temperature and corrosion resistant, stable performance

• Shank Diameter: 1/2"(12.7mm)
• Eliminate the dangerous temptation of withdrawing the shank from the collet, extend the bit to provide the full depth of cut.
• Make you work better, more efficient, more durable processing products.
• Make you more efficient to process products, suitable for woodworking trimming, milling, engraving machine
• Made of high quality material, durable and practical to use

YAKAMOZ

• Extend your router bits an additional 2-1/4-inch
• Eliminates the dangerous temptation to withdraw the shank from the collet.
• Use all diameters of 1/2-inch shank bits safely; use with 1/2-inch shank routers only

MLCS

• Shank Diameter: 1/2"(12.7mm), Accept Shank Size: 1/4" & 1/2" Shank, Extend Length: 2-1/4". For CNC Engraving Machine & Milling Lathe Tool Holder. Eliminate the dangerous temptation of withdrawing the shank from the collet, extend the bit to provide the full depth of cut. Place the router collet extension shank in the 1/2-inch router collet and the router bit shank in the extension collet and tighten both.
• Industrial Grade Quality. Made of high quality spring steel, high strength, good toughness, strong shock resistance and long life use. Easy to use, better to control, it will improve your work efficiency.
• The router collet extension chuck accepts both 1/4" and 1/2" shank router bits for converting and extending. Widely used, boring, milling, drilling, silk attack, sculpture, CNC, and other processing, for professionals and hobbyists demanding.
• Package includes: 1 x Router Collet Extender Holder, 2 x Chuck(6.35mm/ 1/4 inch; 12.7mm/ 1/2 inch), 1x ER20 M Type Wrench Spanner. This router collet extension chuck accepts both 1/4" and 1/2" shank router bits for converting and extending.
• Perfect choice of professionals and hobbyists, Provides much convenience to your daily woodworking. If any question, please let us know, we will try our best to solve for you and do whatever it takes to make you happy.

Helovmine

• High quality,made of heavy-duty steel, sturdy and durable for long life.
• High concentricity and 1/2 inch shank diameter,don’t worry about wobble and bent.
• Overall length of the router collet extension is 3-1/4 Inch.
• Saving money on buying longer milling cutter,declining the risk of withdrawing the shank from the collet.
• Greater for that router table that doesn't quite extent to where you want it to.

Wolfride

• Shank Diameter: 1/2"(12.7mm), Accept Shank Size: 1/4" and 1/2" Shank, Extend Length: 2-1/4”. This router collet extension chuck accepts both 1/4" and 1/2" shank router bits for converting and extending.
• Converter Adapter and ER20 Spring Collet Made of durable steel for maximum strength and long life use; ER20 M Type Collet Chuck Wrench Spanner Made of High Carbon Steel, Anti-slip handle Design, for ER20 M Lathe Clamping Nut.
• High precision, stable performance. Extend your router bit to provide the full depth of cut, for both 1/4 inch and 1/2 inch shank router bits.
• Eliminate the dangerous temptation of withdrawing the shank from the collet, extend the bit to provide the full depth of cut. Place the router collet extension shank in the 1/2-inch router collet and the router bit shank in the extension collet and tighten both.
• This router collet chuck provide the additional depth of cut needed for many routing tasks. Easy to use, better to control, it will improve your work efficiency. Package including: 1* 1/2 Inch shank collet extension,1* ER20 1/2 Inch Collet, 1* ER20 1/4 Inch Collet, 1* ER20 M Type Collet Chuck Wrench Spanner.

Carzces

• Use with any router table or any router lift to give you the cutter height you need and convenience you will love; includes 1/4 to 1/2 adapter and hex key
• Short length and massive body eliminate deflection found with other extensions
• Dynamically balanced and machined from fatigue proof steel allows running larger cutters
• Quickly change cutters from above the table with a quick 1/4 turn of the wrench
• No need to search for your spindle lock or use a pair of wrenches to change bits again

Router Technologies

• 1/2-inch Shank Router Collet Extension, also only suitable for 1/2 inch shank router bits!
• Made of heavy-duty steel, sturdy and durable for long life
• Eliminate the dangerous temptation of withdrawing the shank from the collet
• 1/2 inch shank more stable, extend the bit to provide the full depth of cut
• Easy to use, Ideal tool for woodworking trimming, milling, engraving machine

Eyech