Polymer SBR16UU 16mm low noise Linear Motion Ball Bearing Pillow BlockPolymer SBR16UU 16mm Low noise Linear Motion Ball Bearing Pillow Block Polymer SBR16UU 16mm Linear Motion Ball Bearing Pillow Block. New solid polymer material, lightweight, good wear resistance and strength, more stable and help to reduce noise Solid Polymer SBR16UU Bearing Linear Ball Bushing Inner Contact Diameter: 16mm Improve them efficiency and save energy. Quantity: 1 Bearing No oil needed,Self lubricating, Dust proof. Improve them efficiency