Material: This black utility wrench has a cross shape and is made of high quality zinc alloy. It's sturdy and durable. You can use it for a long time. The outer layer of the keys is sprayed with black paint, which can prevent rust and prolong the life of the keys Multifunctional: The practical table keys have 4 shapes, including 2 square, 1 triangle and 1 shape key, as shown in the picture. It's practical and works as long as the size and shape match. SIZE: The 4-way utility key measures 6.5 x 6.5 x 1.2 cm and can be carried around or in your pocket. Wide range of applications: The multi-function wrench can be used as a manual wrench to turn the screw, suitable for various electric, water, gas, train, cabinet, elevator and other valves. A multipurpose key is always available. Warm reminder: This utility key is not suitable for coolers. Please make sure its size matches your device before buying.