Drill Chuck, 1/2-20unf 2~13mm Keyless Hand Drill Chuck Multi Purpose Self-tightening Drill Chuck Jiujiuso The product is shipped based on the color or size of the main image of the product page. Strong Clamping Force: The chuck can easily convert the torque applied by the handle into a larger clamping force, firmly fix the drill bit, and not easy to loosen. Detachable: The drill chuck easy to install and disassemble, replace as needed, more convenient and economical. Chuck Size Range: Wide range of collar sizes ranging from 2~13mm, connection size 1/2-20UNF. Keyless Design: Keyless self-tightening design is more ergonomic. After heat treatment, the drill chuck has good toughness and superior structural strength. Application: Durable and has a long service life, suitable for long-term work, suitable for many types of drill bits. Show details: Hardened Fire treatment of vulnerable parts improves strength, hardness and wear resistance Forge Seiko The surface is rust-proof, durable and flexible for repeated use durable High carbon steel material, strong and durable Shipping Quantity: 1 piece Size: 71 x 43mm (slight error, please refer to the actual product for details)