Made of high-quality materials, durable and practical.With heat treatment, the product has good toughness and higher structural strength. locking function breaks through the traditional locking , with ratchets on the back.The locking plate is installed in the back sleeve, which can prevent loosening and loosening in the work more effectively and make the clamp more reliable when holding the tool.Good metal texture, comfortable coat surface. thrust bearing is easy to convert the torque applied by the handle into greater clamping force.Scope of application: It is suitable for percussion drills with power above 1050W.type:A: 1 x Square mouthModel Number:AdapterPower:ManualColour:blackMaterial:MetalPackage Contents:1 x Electric drill chuck1 x Square mouthOnly 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.