Mesee 1/2 inch Shank Router Collet Extension Chuck Rod, Woodworking Milling Engraving Machine Extender Rod Holder Accepts Bits

Made of heavy-duty steel, tough, wear resistant and durable for long time using Shank Diameter: 1/2"(12.7mm), Overall Length: 3-1/8'' (80mm), can extends your router bits an additional 2-1/4-inch. Eliminate the dangerous temptation of withdrawing the shank from the collet, extend the bit to provide the full depth of cut. Widely used for automobile manufacturing, mold manufacturing, machinery manufacturing and so on. Please Note: Only accepts 1/2 inch shank bits. Need to tighten with a wrench to prevent the bit from falling off.