You Can Get: 4pcs Bearing Block, 20mm Bore Ball Mounted Pillow Block Insert Bearing. Our pillow blocks are always your best choice. High Quality: Using high quality zinc alloy material, sturdy and wear resistant. Zinc alloy flange underside with excellent quality and long service life. Adjustable Angle: Fine adjustment can fix between inner bearing and outer ring angle. Smooth operation, low friction and high stiffness. Easy to use: These 4 pack ball bearings by two-hole housing with ball bearing insert for ready-to-mount installation. The ball bearing pillow has a fixing screw fixing ring for firm fixing on the guide shaft. Versatility: Bearing bearings are widely used in various machines, such as conveyors, mechanical equipment, machinery manufacturing, 7D printers and other machinery etc. Specifications: Material: Zinc Alloy Model: KP004 Ball bearing Dimensions: 100*20*55mm (LWH) Hole diameter: 20mm Net weight: 580g Package content packaging: 4 pieces Bearing block