Description 0 8 10mm 1 4 Inch Hex Shank Keyless Chuck Driver 3 8 Inch 24UNF Keyless Drill Chuck Converter Specifications Material High speed steelLength Approx 85mm 3 34Shank Diameter Approx 6 35mm 1 4Clamping range 0 8 10mm 0 031 0 39Quantity 1pc Feature Unique patented locking function breaking the traditional locking methods After having ratchet the locking pieces mounted on the rear sleeve the lockingperipheral length more effective in preventing the removal work loose the collet ismore reliable when the gripping means Good metal texture comfortable coat surface Torque thrust bearing unique easy grip exerted translate into greater clamping force Scope Suitable for power 1050W more impact drill Package Included 1pc x Drill Chuck Notice 1 Please allow a bit error due to manual measurement please make sure you do not mind before you bid 2 The color may have different as the difference display pls understand More Details