The Metric Impact Set has laser etched sizes that include 10, 11, 12, 13, 14, 15, 17, 18 and 19 mm. The sockets are guaranteed to last forever, they're black oxide exterior will stand up to whatever your garage can throw at em. Priced for both professional and home garage use, the Metric Impact Set delivers serious torque from your impact wrench. But the greater value comes from going with a brand you can trust.