Durable MaterialThe drill chuck is made of high quality alloy, tight clamping, wear-resistant, surface plating, anti-rust and durable. Light weight and small size, no extra burden when using.Three Jaw DesignThe chuck uses triangular stability principle to provide superb stability by clamping the drill bit in three directions simultaneously, clamping it tightly and working safely.Universal Hex HandleThe universal 1/4 inch hex handle of the screwdriver chuck easily attaches to your electric screwdriver, turning your electric screwdriver into an easy-to-use and convenient drill or grinder for a quick change.Wide Range of ApplicationsUse the screwdriver chuck to turn your electric screwdriver into a small drill or grinder, perfect for daily maintenance, woodworking drilling and sanding, woodworking use. DIY and improving your work efficiency.Quantity and SizeYou will receive 2 drill chuck, one keyless chuck a silver with a length of 72 mm and a clamping range: 0.3-6.5mm and a black keyless chuck with a length of 49mm and a clamping range: 0.3-3.6mm, which can meet most of your working needs.