- WEIGHT: 420 g/pr (Al) / 361 g/pr (Mg)
- BODY: Aluminum / Magaesium
- FINISH: Aluminum ED Black or Painted / Magaesium Painted
- SPINDLE: Cr-Mo
- BEARING: Ball Bearing
- SIZE: 108.5*100*28 mm ORIGIN: TAIWAN
- OPTION: B155U / B155R / B155V / 155C / Sealed bearing version as B155B