This item will be shipped within One Week Returns Subject to 15% restocking Fee SSUCFT204-20mm Stainless Steel Flange Unit 2 Bolt Set Screw Locking 20mm Inner Diameter Ball Bearing SSUCFT204-20mm Stainless Steel Flange Unit 2 Bolt Ball Bearing, SSUCFT204-20mm is Set Screw Locking, bearing has solid base housing construction, bearing has wide inner ring, bearing is relubricatable unit witj anti-rotation pin, bearing has supplied with watre and wash resistant mobilgrease.