Technical specification:\n\n- Material : Aluminium 6061-T6\n\n- Weight : 181g (6.4 oz) with bearings\n\n- Diameter : 100mm\n\n- Hardness : 88A\n\n- 8 STD (24 mm wide)\n\n- Bearing and spacer included\n\n- Colors : Black / Blue / Red / Neochrome