Our 4 way radiator key has 4 shapes of holes, including a 5 mm round hole, a 8.75 mm triangular hole, and 2 square holes with dimension of 6 x 6 mm and 8 x 8 mm respectively, suitable for satisfying your different uses; please check the tool size of yours before order. Each package contains 1 cross key with 4 sizes of holes that can be used as a wrench for a variety of different tools to rotate screws, and it is a very convenient and practical product in your daily life。 Multi-functional key: our 4-way key is widely used for radiator, electricity, water and gas tube, cabinet, elevator and other valves, and it is also very compact, easy for you to storage and carry around. Material: our 4-way key is made of high quality zinc alloy, which is strong and durable, its color is silver, which can hardly fade, sturdy and long-last that can provide you with a long service life. Our 4-way key is suitable for most radiators, but it may not suitable for radiator valves of special size, so please confirm the size of the wrench you need before buying., Weight: 0.00220462262 pounds, Manufacturer: Xujia