Item Type: Rod Rail Guide Support Commodity Material: Aluminum Alloy Model: SHF30 Length: Approx. 80mm / 3.1in Aperture: Approx. 30mm / 1.2in Mounting Hole Diameter: Approx. 9mm / 0.4in Locking Bolt: M6 Center Distance of Mounting Hole: Approx. 65mm / 2.6in Uses: Suitable for Large Scale Automatic Transmissions, Industrial Robots, Plastic Machinery, Fitness Equipment, Printers, Woodworking Machinery, Ultrasonic Cleaning Equipment, Solar Auxiliary Equipment, Clothing Auxiliary Equipment, Etc. Package List 2 x Rod Rail Guide Support 1Improve machine efficiency, save energy, and use it in combination with linear bearings to support or drive. 2Using high strength aluminum alloy material, good quality, safe, durable and practical. 3The bearing is a self aligning bearing block bearing, you can easily adjust or replace the bearing. 4Rhombus flange base, anti rust, durable, long life, excellent performance, smoothly move, low friction. 5Suitable for large automatic transmissions, industrial robots, plastic machinery, fitness equipment, printers, woodworking machinery, etc.