Router collet extension for 8mm shank bits, need to tighten with wrench to prevent bit from falling out._x000D__x000D__x000D__x000D_Made of heavy duty steel for long life life, convenient to use._x000D__x000D__x000D__x000D_Eliminate the dangerous temptation to pull the shank off the collet, extend the bit to provide the full depth of cut._x000D__x000D__x000D_Make you more efficient to process products, suitable for wood cutting, milling, engraving._x000D__x000D__x000D__x000D_Package content : 1 x 8mm Rod Collet Extension._x000D__x000D__x000D__x000D_Product _x000D__x000D__x000D__x000D_Collet Extension Feature:_x000D__x000D__x000D_This clamp extension is made of industrial grade material, precision, solid and sturdy for long service life._x000D__x000D__x000D_This router collet chuck provides the extra depth of cut needed for many routing tasks._x000D__x000D__x000D__x000D_Easy to use, better to control, it will improve the efficiency of your work. Use it to achieve full depth of cut when machining dovetail flutes, ideal for your woodworking._x000D__x000D__x000D__x000D_Extension Specifications Clamp:_x000D__x000D__x000D__x000D_Material: Hard Alloy_x000D__x000D__x000D__x000D_Black Color_x000D__x000D__x000D_Stem diameter: 8mm_x000D__x000D__x000D__x000D_Holding diameter: 8mm_x000D__x000D__x000D__x000D_Overall length: 87mm_x000D__x000D__x000D__x000D_Package Included:_x000D__x000D__x000D__x000D_1 x Router Clamp Extension_x000D__x000D__x000D__x000D_Note: _x000D__x000D__x000D__x000D_1. The speed reaches 20000 RMP_x000D__x000D__x000D__x000D_2. For the er hardness material, please use 1/2 handle_x000D__x000D__x000D__x000D_3. Cannot be used for iron products, be careful if there are nails in the board or the like_x000D__x000D__x000D__x000D_4. Please take protective measures when using