FUNCTIONAL: These keyless drill chucks easily turn your cordless power screwdriver into a drill or grinder for quickly switching tasks and staying on track; they are an essential power tool accessory FUNCTIONAL: These keyless drill chucks easily turn your cordless power screwdriver into a drill or grinder for quickly switching tasks and staying on track; they are an essential power tool accessory Accessory Size: You get 4 drill chucks with 2 hex shanks with a clamping range of 0.3 - 6.5 mm and 2 round shanks with a clamping range of 0.3 - 3.4 mm. Wide Application: This drill chuck has specifications, suitable for most electric drills and cordless electric screwdrivers; they can be applied to cars, garages, warehouses, offices, homes, etc. AND OFF: This keyless drill chuck converter can go from driving to drilling in seconds and also gives you the freedom to drill with one hand, perfect for working in tight spaces Colour:As Shown Material:carbon steel Size:7.4 x 4 x 4cm Package Contents: 2 x Hex handle hand drill chuck 2 x round handle round handle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.