This Makita B-54645 1/2" impact socket set includes sockets in sizes 8, 10, 12, 13, 14, 15, 17, and 18 mm. It also comes with a 1/4" Hex to 1/2" Square converter, making it ideal for use with Impact Drivers and Impact Wrenches. The sockets feature a black phosphate coating to resist corrosion. This 9-piece set is designed for durability and performance in demanding applications.