1.Clamping RangeThe steel three-jaw chuck can accommodate accessories with a size of 0.4-3.2mm, and the adapter is made of alloy for super durability. The chuck is small and lightweight, so it will not bring extra burden to your operation. 2.Powerful Clamping Force: The drill chuck adapter adopts a single torque thrust bearing and is well designed. You only need to tighten the chuck to get a strong clamping force, and the tightening is stable. 3.Easy to Use: The keyless drill chuck adapter makes charging power tools easier and safer. Just insert and tighten the standard drill bit by hand to reduce the time required for the project. 4.Easy to Load and Unload: The three-jaw chuck converter can be converted from driving to drilling in seconds, and it also allows you to drill freely with one hand, which is very suitable for working in small spaces. 5.Wide Application: These drill chucks have different specifications and can adapt to most electric drills; they can be used in cars, garages, warehouses, offices, residences, etc.