BEIJIYI 1/2-20UNF Keyless Drill Chuck 2-13mm Multi-Angle Drill Chuck

SPECIFICATIONS --- Wide collet size range from 2 to 13 mm / 0.04 to 0.51 inches, suitable for many types of drill bits. Diameter: 43 mm / 1.69 inches; Length: 71 mm / 2.8 inches; Drive Size: 1/2-20UNF; STRONG CLAMPING FORCE --- Its unique design can easily convert the torque applied by the handle into stronger clamping force, holding the drill bit firmly and securely, not easy to loosen. EXCELLENT PERFORMANCE --- The keyless and self-tightening design is more in line with human engineering. Thanks to heat treatment, the product has good toughness and superior structural strength. EASY TO USE --- Durable and long-lasting, suitable for long-term work. Easy to install and disassemble, more practical and labor-saving. It has a good metallic texture and a comfortable coating surface.