There are various tire levers for bicycles, but I only use these from Maruni. They are incredibly easy to use, and being made of plastic, they are gentle on tires, tubes, and rims (wheels) compared to metal ones. Length: Approximately 11cm. Set of 3 in red/blue/yellow. Manufacturer: Maruni Kogyo Co., Ltd. "EARTH" is the brand logo of Maruni Kogyo. Price is not negotiable. There is no packaging or instruction manual. Use them for tire changes, tube changes, and maintenance on general bicycles (mamachari/lightweight bicycles/commuter bikes), as well as children's bikes, fashion cycles, city cycles, MTBs, junior mountain bikes (CTBs), and sports bikes such as road bikes, cross bikes, track bikes, cyclocross bikes, randonneurs, small-wheeled bikes, folding bikes, and electric assist bicycles.