Dimensions: 7.2 x 7.2 x 1.3 cm. Material: Made of good quality zinc alloy. Sturdy and durable. 4 shapes: 2 square shapes, 1 triangle and 1 key shape. shown. Multiple functions: the multifunction keys can be used as a key. convenient and turn the screws, suitable for many electric valves, water, gas, train, etc. the cupboard, at the elevator, etc Mobile phone: the key; crossover is 56g in weight, and there is a hole in the middle of the key. cross, it can be hung on the key ring for easy transport