Description Dual compound structure improves stopping power. Made of hard-wearing material. Minimizes rim wear and reduces braking noise. The long and curved design matches the rim for improved braking power. Fits most bikes, like mountain bike, city bike, folding bike. Features - Material: Aluminium alloy, synthetic material - Special drainage pattern design to strengthen the response to rain road slide and other bad weather. - Unique grooves design can endure consistent jolts and bumps to provide excellent braking ability. - Angled tip and grooves sweep dirt, mud and moisture from rim. - Scientific structure improves stopping power. It will give you a good experience. - Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience. Special drainage pattern design to strengthen the response to rain road slide and other bad weather.​ Unique grooves design can endure consistent jolts and bumps to provide excellent braking ability. Angled tip and grooves sweep dirt, mud and moisture from rim. Scientific structure improves stopping power. It will give you a good experience. Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience.