Usage Tips:Premium Material: Our unit bearings are made of premium alloy material, sturdy and wear-resistant, alloy flange with quality and long service life.Easy to assemble: Pillow block set with ball bearing insert for -to-install installation. Metal bearing kit for maintenance and replacement of accessories for 3D printers.Adjustable Angle: The alloy shaft bearing can be fixed between the inner bearing and the outer ring angle. Smooth running, low friction and high rigidity.Easy to : Bore bottom bracket is suitable for securely attaching to guided shafts, -in pillow blocks, parts and accessories for 3D printers and other machines. Very helpful in holding the driveshaft.Wide Application: Insert pillow bearings with components can the efficient operation of the 3D printer, and can be used in various machines such as conveyor belts, mechanical devices, machinery manufacturing, etc., which are suitable for household and industrial purposes.Colour: silverMaterial: Size: 100 x 55 x 20mmPackage Contents:4 x Bearing HousingOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm."