1. Made of high quality steel material, durable to use. 2. One tool with 4 key sizes for tightening and loosening chuck 3. This 4 way universal chuck can perfect replacement for lost or damaged chuck keys 4. Light weight and it is convenient to use. 5. Suitable for most drills and power tools Specification: Condition: 100% Brand New Material: 45# Steel Weight: Approx. 52g / 1.8oz Size: Approx. 74 * 38mm / 2.9 * 1.5in Outer Length: Approx. 13mm / 0.5in Inter Length: Approx. 7.4mm / 0.3in Package List: 1 * 4 in 1 Drills Chuck Key Made in prc