2-Hole Flanged Stainless Steel Pillow Block Bearing, 1 Inch Diameter Great replacement upgrade for hand crank tarp roller bearings including the ALL TRUCK PRODUCTS hand crank systems. Also fits any salt spreader that uses a 1" inside diameter stainless steel bearing for the auger. Bearing has a grease zerk fitting for easy lubrication to extend the life of the bearing. Mounting holes are 13/32" (0.40625") in diameter with 3.0" spacing 'center-to-center' between mounting holes. zerk fitting for easy lubrication to extend the life of the bearing.