General description The 6 Pieces Universal Chuck Key Drill Chuck Keys set is designed to accommodate various drill bit sizes, making it an essential tool for any DIY enthusiast or professional. This kit includes keys for 4mm, 6mm, 10mm, 13mm, 16mm, and 20mm drill bits, ensuring compatibility with a wide range of electric drill chuck tools. Technical specifications Chuck Diameter: 3/4" (20mm) Chuck Diameter: 5/8" (16mm) Chuck Diameter: 1/2" (13mm) Chuck Diameter: 3/8" (10mm) Chuck Diameter: 1/4" (6mm) Chuck Diameter: 5/32" (4mm) Material: Solid carbon steel with a durable coating Usage Easy to use with a comfortable grip for tightening and loosening drill bits. Ideal for holding drill bits securely in place. Compatible with most brands of power tools, making it a versatile addition to your toolkit. Other information Features an anti-slip and anti-skid design to minimize stress damage. Compact size for easy storage.