... PP plastic,chrome-plate steel2. Wheel material : PU,High-elastic,Anti-friction3. Wheel flashes with multicolour lights -no motor ... batteries require4. Bearing material :ABEC-5, High-performance5. Strap : High elastic strap6. Maxload: 60kgs7. Certificate:CE, SGS8. eye-catching ... 4. Bearing material :ABEC-5, High-performance 5. Strap : High elastic strap 6. Maxload: 60kgs 7. Certificate:CE, SGS inner ...