Dimensions: 1 x Stepped Wrench 5 Sizes 3/8, 1/2, 3/4, 1-1/4 Inch Usage: Universal step wrench, e.g. for tightening the lower part of thermostatic valves/heaters/radiators. Material: The universal installation wrench is made of high carbon steel, strong and safe. Best Gift: Radiator ratchet wrench as a gift for dad and friends, work smart, better labor relief! Package Content: Stepped Wrenches in 5 Sizes Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.