1. The brake disc is made of stainless steel with chrome-plated surface, durable and corrosion-resistant.
2. Circulate air around the brakes to help dissipate heat.
3. Material: stainless steel
4. Weight: about 217 grams
5. Size: about 140mm in diameter
6. Suitable for Xiaomi Ninebot GT1 GT2 Scooter