Auto Vacuum Parts Features: 1) Shaft type: solid shaft, hollow shaft, multiaxial shaft 2) Housing type: flange type, bol Auto Vacuum PartsVacuum PartsBearings components/Vacuum PartsFerrofluid sealed gearing ... Product catalogue: Shaft type: Solid Shaft(S), Hollow Shaft(K), Multiaxial Shaft(D) Housing type: Flange type(F), Bolt type(S), Nut type(M), Through hole type(T) Cooling Way ...