This item will be shipped within One Week Returns Subject to 15% restocking Fee SSUCPAS210-50mm Stainless Steel Tapped Base Pillow Block Unit Set Screw Locking 50mm Inner Diameter Ball Bearing SSUCPAS210-50mm Stainless Steel Tapped Base Pillow Block Ball Bearing, SSUCPAS210-50mm 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.