Product: 1/2 Inch Shank Router Bit Collet Extension Collet Extender with ER20 Spring Collet Set Chuck Collet 6.35mm 12.7mm and ER20 M Type Wrench Spanner-Convert 1/2-Inch & 1/4-Inch Shank Bits
Brand: Helovmine
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.

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