M18/M19/M20 Bicycle Crank Bolt Cover - Rainbow Aluminum Alloy Bottom Bracket Accessory

Hey bike mechanics and DIY enthusiasts! This little aluminum alloy crank bolt cover might seem small, but it plays a big role in keeping your crankset securely in place. Made from high-quality CNC machined aluminum, it's super lightweight (only 7g!) but seriously durable - no rust, no wear and tear issues. The rainbow color option adds a nice pop of style to your bike's bottom bracket area. It's compatible with M18, M19, and M20 crank screws, working perfectly with PROWHEEL hollow chainrings and older FC-4500/FC-5600 road cranksets. Installation is straightforward - just screw it into place and you're good to go. The precise threading means it fits snugly without any wobble or play. Whether you're building up a new bike or just doing some maintenance, this small part makes a big difference in keeping everything tight and looking sharp. One cap per package, ready to upgrade your ride!