1. Material: aluminum alloy 2. Process: CNC process 3. Dimensions: 11.2 x 9.8 x 1.4 cm 4. Weight: 320g/pair 5. Widen the tread and fit more effortlessly 6. Aluminum alloy material, sturdy and durable; integrated cutting is not easy to break 7. Sealed bearing, waterproof and dustproof
