🔧 Elevate Your Machining Game! Achieve accuracy to 0.0004" for flawless machining. Say goodbye to sticking with our innovative self-releasing design. Includes everything you need: collets, wrench, and a fitted case for easy storage. Experience superior concentricity and clamping with flute holding capability. Perfect for milling and drilling operations with a wide range of collet sizes. Complete Kit Included Wide Holding Range High Accuracy: 0.0004" The Accusize Industrial Tools 15 Pc ER40 Precision Collet Set is designed for high accuracy in milling and drilling operations. With a self-releasing system that prevents sticking, this set includes a wide range of collet sizes and a complete kit featuring a wrench and R8 Bridgeport shank holder, all housed in a fitted box for easy organization.