... motor or batteries require4. Bearing material :ABEC-5, High-performance5. Strap : High elastic strap6. Maxload: 60kgs7. Certificate:CE, SGS8. eye ... required 4. Bearing material :ABEC-5, High-performance 5. Strap : High elastic strap 6. Maxload: 60kgs 7. Certificate:CE, SGS inner packing ... /ctnr: 12000/20Fflashing roller,flash roller,flashing roller skate lashing rollers roller skates street glider