<h3>Key features</h3><ul> <li>Package: This package includes of 4 pcs SBR25UU Aluminum Slide Blocks.</li> <li>Compatible: This Slide Block is fit for SBR25 25mm Linear Guide Rail.</li> <li>Material: The bearing block is made of aluminum alloy and Ball Bearing Steel. It is sturdy and durable.</li> <li>High Quality: Industrial-grade standard SBR block with high precision; With excellent motion ball, it moves smoothly with low friction. You can use it for a long time. Standardized processing, ideal for guide rail positioning.</li> <li>Application: suitalbe for CNC machine electronic equipment,drive shaft, CNC router linear rails, mills, lathes, and so on.</li> </ul><p>Package includes: 4PCS SBR25UU Linear Ball Bearing Slide Blocks</p><p>Free shipping included. 30-day hassle-free returns.</p>