This item will be shipped within One Week Returns Subject to 15% restocking Fee SSUCF204-12 Stainless Steel Flange Units 4 Bolt Set Screw Locking 3/4" Inner Diameter Ball Bearing SSUCF204-12 Stainless Steel Flange Units 4 Bolt Ball Bearing , SSUCF204-12 is Set Screw Locking, bearing has solid base housing construction, bearing has wide inner ring, bearing is relubricatable unit with anti-rotation pin, bearing has supplied with water and wash resistant mobilgrease.