1/4 Inch Shank Router Bit Collet Extension Chuck Converter Adapter, Convert 1/8-Inch & 1/4-Inch Shank Bits with ER16 Spring Collet, ER16 M Type Collet Chuck Wrench Spanner -(Pack of 4)

Additional Details from the Manufacturer

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More features

• Shank Diameter: 1/4"(6.35mm), Accept Shank Size: 1/8" and 1/4" Shank, Extend Length: 2-1/8”. This router collet extension chuck accepts both 1/8" and 1/4" shank router bit for converting and extending.
• Converter Adapter and ER16 Spring Collet Made of steel for maximum strength and long life use; ER16 M Type Collet Chuck Wrench Spanner Made of High Carbon Steel, Anti-slip handle Design, for ER16 M Lathe Clamping Nut.
• High precision, stable performance. Extend your router bit to provide the full depth of cut, for both 1/8 inch and 1/4 inch shank router bit.
• 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 1/4-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* 1/4 Inch shank collet extension,1* ER16 1/4 Inch Collet, 1* ER16 1/8 Inch Collet, 1* ER16 M Type Collet Chuck Wrench Spanner.