1. This is a multi-functional tool specifically designed for mountain bikes, made of aluminum alloy. It integrates various functions, such as oil needle installation, oil pipe insertion, oil disc five-wire body placement, T-head pressing, and pipe cutting. It is a practical assistant for mountain bike maintenance. 2. The aluminum alloy material gives it good strength and durability, enabling it to withstand a certain amount of external force and friction. This ensures that it is not easily damaged during long-term use, providing long-term reliable support for your bike maintenance work. 3. This tool has precise specifications and is suitable for various related operations of mountain bikes. Whether you are a professional bike repairman or a cycling enthusiast who likes to maintain your bike by yourself, you can easily complete complex installation and maintenance tasks with the help of this multi-functional tool. 4. With it, you can more efficiently handle the installation and adjustment of components such as mountain bike oil needles and oil pipes, keeping your mountain bike in good running condition all the time.