Material: Metal + plasticSize: 122*42mmHole dia: 12mmLength of handle: 46mmClamping range: 2-13 mmApplicable scope: suitable for the of 1050 w above impact drill.unique patented locking function, traditional locking methods, back having ratchet teeth,the locking pieces mounted on the rear sleeve, the locking peripheral length, more effective in preventing work loose off, so that the clamp chuck,more reliably support tools.Good metallic and comfortable coat surface.Unique torque thrust bearing is easy to handle applied translate into greater clamping force.Color: black and grayPackage include: 1x drill chuckNote: Light 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.