[Function]: Comes with 1 universal 4-way chuck, used to tighten and loosen the chuck [Hardware]: Made of durable metal spray material, smooth polishing surface treatment, wear-resistant [4-way chuck key]: its size is accurate and suitable for installing and dismounting various drill bits [Mounting]: The perfect chuck key for various drill and power tools; convenient to carry as small volume and lightweight Features: 1. Made of high quality steel, durable to use. 2. A tool with 4 wrench sizes to tighten and loosen the chuck 3. This universal 4-way chuck can perfectly replace lost or damaged chuck keys 4. Lightweight and convenient to use. 5. Suitable for most drills and power tools Specification: Weight: approx. 42g Size: approx. 75*75mm Color: Black Package List: 1*4 in 1 Drill Bits Chuck Key