Application: Widely used for digital 3D coordinate measuring equipment such as precision equipment or special machinery industry Aluminum Linear Rail Shaft Support Bracket Shf 12mm - Shaft Support, Bearing Function: The SK12 rail clamping rod guide supports offer secure clamping and precise alignment for the linear motion rods. They can be used in robotics, CNC machines, 3D printers, automation equipment, and other machinery where precise linear motion is required Features:Made of Aluminum material, corrosion resistance and long life. Linear Rail Shaft Support SK12 - Systéal Linear Rail Support Block Uxcell 4pcs SK12 Aluinu Linear Rod Rail Shaft Support For 12 Precision Machinery Accessories Model: SK12; Shaft Diameter: 12mm/0., 47inch; Mount Hole Dia., : 5., 5mm/0., 22inch DIYers and machinists, these aluminum rail guides are perfect for your linear motion projects! The SK12 model fits 12mm diameter shafts (0.47") with 5.5mm mounting holes Good abrasion resistance, not easy to rust, high precision and good strength. High friction resistance can get high precision rotating in the smooth movement.