ALL-CARB 1/8-5/8 R8-B18 Super Heavy Duty Drill Chuck with Drill Chuck Tightening Key Fit for CNC Lathe Milling Drill Machine

1/8 -5/8 R8-B18 Super Heavy Duty Drill Chuck with Drill Chuck Tightening Key 3-16mm Specification: Clamping range: 1/8 -5/8 Shank size: R8-B18 Accuracy: 0.005 Compatibility: The drill chuck is fit for CNC machine tools and machining centers that accept R8 tool handles Features: The drill chuck has been precisely polished with stable performance strong clamping force and convenient installation and disassembly It is made of 40CR hardness HRC60 steel after precision grinding and the claw clip is specially treated with good use effect and long service life Package Includes: 1 x drill chuck 1 x R8 shank 1 x drill chuck key