Self-Tighten Keyless Drill Chuck for Multiple Purposes Hand Tools Labor-saving

Description: Mount:1/2-20UNF. Capacity Range: 1.5-13mm Greater clamping force effectively preventing drill bits loose off more reliable. Easy to install and disassemble more convenient and labor-saving. Large range of clamp size which range from 1.5~13mm suitable for many kinds of drill bit. Specifications: Material:Carbon Steel Size:Approx.71x43mm/2.8x1.7in Mount:1/2-20UNF Note: Please allow 1-2cm errors due to manual measurement please make sure that you do not mind before you order. Due to the difference between different monitors the picture may not reflect the actual color of the item. Package Includes: Package A:(A/B Optional) 1x Drill Chuck Package B: 1 x Drill Chuck 3 x Shanks