- 【Design】: The bike crank arm bolt features a hollow integrated chainring screw design, used for securing the crank and chainring's arm. It is an essential component of your bike's performance<br> - 【Quality material】: This m15 bicycle crankset bolt is made from quality aluminum alloy, ensuring durability and resistance to wear and tear. Its sturdy construction prevents deformation, allowing for long term use<br> - 【Easy installation】: This bike crankset screw is easy to install, making it a great replacement for damaged or old parts on your bicycle<br> - 【Appropriate size】: With an inner diameter of 15 mm, a length of 2.5 cm, and a width of 2.1 cm, this cycling accessory is compact in structure and lightweight in design, nice for portability<br> - 【Wide application】: This bikes hollow fixing is ideal for various types of bikes such as mountain bikes and road bikes among others; it also makes a practical accessory tool gift for cycling enthusiasts<br> <br> Specification:<br> - Material: Aluminum Alloy<br> Size Chart:<br> Total Size: 2.1 cmx2.1 cmx2.5 cm/0.83 inchx0.83 inchx0.98 inch<br> Inner Diameter: 1.5 cm/0.59 inch<br> <br> Package Includes:<br> 1 Bike Crank Arm Bolt<br> <br> Note:<br> Please allow slightly errors 1-2cm differences due to manual measurement.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store