The Rockbros GJ8060 is a multi-functional bicycle tool kit that's perfect for those who value convenience while cycling. Here are the details: Features: The set offers as many as 20 different tools, including Allen keys (2, 2.5, 3, 4, 5, 6, 8 mm), hex keys (5, 8, 10 mm), spoke keys (13, 14, 15 G), Torx T25 wrench, screwdrivers (Phillips and flat), tire levers and a chain breaker. Material: Made of high-quality stainless steel and aluminum for durability and corrosion resistance. Compact design: The tool is lightweight (122g) and measures 75 x 40 x 10mm, making it easy to store and transport. Intended use: Perfect for both professional cyclists and amateurs who want to be prepared for every eventuality while riding.