54 Teeth Chain Guard/Protection is an adjustable chain guard designed for bikes with 54 teeth such as the legendary Capriolo GT2. The protector helps keep your bike clean and safe from chain dirt. You need 5 pcs. M3x10 screws and 5 pcs. M3 nuts for mounting. 54 Teeth Chain Guard/Protection is easy to install and can be adapted to your bike's unique design and dimensions.