<h3>Key features</h3><ul> <li>[SUPERIOR DURABILITY] Constructed from high-density aluminum alloy with a surface oxidation treatment, this slide block offers exceptional resistance and long-lasting beauty. Its robust structure ensures strong load-bearing capacity, making it an ideal choice for demanding machinery and precision equipment where reliability is paramount.</li> <li>[ULTRA SMOOTH OPERATION] Engineered for low friction movement, this linear motion bearing reduces abrasion and saves energy during operation. The precision manufacturing guarantees a standard size fit, allowing for seamless integration into your existing systems for consistently stable and reliable performance.</li> <li>[VERSATILE APPLICATION] Specifically designed for high-speed equipment, construction machinery, and transmission devices, this SC20UU slide block excels in environments requiring both speed and precision. Its robust design makes it suitable for a wide range of industrial and DIY CNC projects.</li> <li>[PRECISION DESIGN] With exact of 54mm length, 50mm width, and 40mm height, and a 20mm inner diameter, this unit ensures perfect compatibility with standard linear rails. The oil lubrication with drip lubrication keeps the bearing running smoothly and extends its service life.</li> <li>[EASY INSTALLATION] This 2-pack set includes everything you need for a straightforward upgrade or replacement. The compact and lightweight design, combined with pre-applied lubrication, allows for quick setup and immediate use, reducing downtime and getting your projects moving .</li> </ul><p>Spec: Item Type: Linear Motion Ball Bearing Slide Block Model: SC20UU Material: Aluminum Alloy Length: 54mm / 2.13in Width: 50mm / 1.97in Height: 40mm / 1.57in Inner Diameter: 20mm / 0.79in Lubricant: Oil Lubrication Lubrication : Drip Lubrication Package List: 2 x Linear Motion Ball Bearing Slide Block</p><p>Free shipping included. 30-day hassle-free returns.</p>