【You can get】: 4pcs bearing block, ball mounted pillow block with 20mm bore. Our pillow blocks are always your best choice. 【High quality】: Using high quality zinc alloy material, sturdy and wear-resistant. Zinc alloy flange bottom with excellent quality and long service life. 【Adjustable angle】: Fine adjustment can be made between the inner bearing and outer ring angle. Smooth operation, low friction and high rigidity. 【Easy to use】This set of 4 ball bearings has a two-hole housing with ball bearing insert for ready-to-assemble installation. The ball bearing pillow block has a locking ring with retaining screw for secure attachment to the guide shaft. 【versatility】Bearings are widely used in various machinery, such as conveyor belts, mechanical equipment, engineering machinery, 7D printers and other machinery, etc. Product Description Why choose our bearing? 1. The bore ball bearing seat is made of zinc alloy and is very durable. 2. The bore ball bearing seat has a mounting screw