★Body: AL6061 ★Spindle: 6/4 Titanium(DLC coating) or Stainless steel (TiN coating) ★Bearings: 1xcartridge stainless steel, 1xSS needle bushing. ★Studs: Stainless Steel ★Weight: Ti spindle- 300g(pair) / SS spindle- 335g(pair)