Features 1、B18 drill chuck is with high-precision thread and tapered hole , durable for long lasting. 2、While shell adopts electrophoretic paint, the keyed drill chuck effectively prevents rust in harsh environments. 3、Unique thrust bearing makes such drill chuck easy to convert the key input force into a larger clamping force, and it has strong impact resistance. 4、Compatible with impact drills and various electric tool drills, this hardware tool is very suitable for drilling machines and suitable for aligning, drilling, tapping and reaming operations. 5、The wrench-type chuck is rotated by a chuck key, which can be used in a easy way. Specification Item Type: Drill chuck Clamping Range: Approx. 1-16mm /（1/25''-1/2''） Package List 1 x Drill Chuck 1 x Chuck Key