This adapter allows you to turn a hammer drill into a drill and retain the impact function. An impact drill may be needed when making holes in hard objects and places that cannot be drilled normally. The adapter is made of metal and has a drill bit grip range of 1.5 to 10 mm. The mounting size is 3/8 inch. Due to the high quality of fitting threaded and tapered joints, the components of the adapter are firmly attached to each other and do not play. Includes adapter and tightening wrench. Packed in a vacuum-sealed bag.