1/2in Shank Router Bit Collet Extension, High-Speed Steel Collet Extension SL12.7（1/2）-ER20 for Lathe Processing

The extension rod eliminates the risk of pulling the shank out of the collet and extends the drill bit to provide a full depth of cut. The extension rod eliminates the risk of pulling the shank out of the collet and extends the drill bit to provide a full depth of cut. These clamps are used for 1/2in extension rods and accept 1/2in shank milling cutters for conversion and extension. With high accuracy and smooth cutting, this tool has special impact resistance and good wear resistance. With easy to use, first insert the collet into the cap, then insert the milling cutter into the collet from the top of the nut, then insert them into the rod together, and finally, rotate and fix it with a wrench.