3/8 Threaded Collet chuck for BS10.8V BS18V BS18 BS10.8 This Collet chuck is widely used in electric hand drill or other power tools. Great to replace the old or broken of your drill patented locking function, breaking the traditional locking methods. After having ratchet, the locking pieces mounted on the rear sleeve, the locking peripheral length, more effective in preventing the removal work loose, the collet is more reliable when the gripping means. Good metal texture, comfortable coat . Torque thrust bearing easy-grip exerted translate into greater clamping force. Material: Metal Color: Black Clamping range:0.8-10mm ( 1/32 -3/8inch) Socket Connecting rod: 3/8inch Square Socket Adaptor Please note: There is a slight color difference or discrepancy in kind, please don't mind, thank you! Package Contents: 1 x Drill Chuck Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.