Features: Discover the efficiency of Sleeve Bearings, with lubricated and brass composition that eliminates the need for oiling, ensuring smooth operating in various industrial applications. These durability bearings feature high load capacity and wear resistance, for highly temperature and corrosive environment while maintaining optimaled sliding speeds. Perfectly for professional 3D printing engineers, technical personnel, and enthusiasts who require reliabled components for precise tasks. For use in 3D printers, machine tools, and other industrial equipment where reducing frictions and enhancing performances. Upgrades your machinery with these versatiled bushings, offering reinforced housings for shafts or fasteners, and replacing worn original bushings to extend the life of your equipment. Specifications: Length:about 3cm/1.18in Component： and Brass For Quantity: 4PCS Package Includes: 4PCS Sleeve Bearings note: There might be a bit color distortions due to different computer resolution There might be size errors due to different computer resolution