Features: 1. This linear rail and block are small in size and lightweight, especially suitable for small equipment. 2. It can bear load from every direction, and has good strength and high accuracy. 3. Widely used in textile machinery, printing machinery, power tools, medical machinery, precision machine tools, electrical cutting, automatic recorders and office equipment. 4. 1pcs HGR20-1000mm linear guide rail & 2pcs slide block set, can meet your using needs. 5. Made of high quality bearing steel, solid and sturdy. Specification: Product Name: Linear Guide Sliding track: linear guide Slide rail width: about 20mm / 0.8in Number of sliders: 2 Linear size: about 1000mm / 39.4in Material: bearing steel Static load rating: 25.31 Fixing bolt size: M4 * 16(mm) Allowable static torque: 0.17 (kn.m) Scope of application: Widely used in textile machinery, printing machinery, power tools, medical machinery, precision machine tools, electrical cutting, automatic recorders and office equipment. Package list: 1 * HGR20-1000mm Linear Guide Rail 2 * Slide Block Note: 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.