About This 7 pc. Metric Combination set includes - 8, 10, 12, 13, 14, 15 & 18mm Surface Drive provides a stronger grip on fasteners, reducing fastener rounding Sleek head design enables access to tight spots where a ratchet will not fit Ratcheting box-end needs as little as 5 degrees to move fastener VS 30 degrees for standard box end wrenches Gear teeth are made of all metal construction for strength and durability Overview Color : No Color Brand : GEARWRENCH Material : Alloy Steel Item Length : 18 Millimeters Item Weight : 1.9 Pounds