... Features 4,Quality Approvals 5,Small Orders Accepted Water-pump Bearings1. High precision,Long life2.Standard bearings3 .Good ... ≤ 1mmOuter bore: ≥1,000mmMaterials: chrome steel, stainless steel, ceramic and plasticTypes: rubber-seal, shield, N and NRLubricant: grease ... and oilApplications: automobiles and machiner Water-pump Bearings, Made of Chrome Steel, Stainless Steel, Ceramic or Plastic