1This linear rail and block are small in size and lightweight, especially suitable for small equipment. 2It can bear load from every direction, and has good strength and high accuracy. 3Widely used in textile machinery, printing machinery, power tools, medical machinery, precision machine tools, electrical cutting, automatic recorders and office equipment. 41pcs HGR201000mm linear guide rail & 2pcs slide block set, can meet your using needs. 5Made of high quality bearing steel, solid and sturdy.