Model: SBR12LUU Material: ball bearing steel Size: approx. 75 x 35 x 27 mm / 3 x 1.4 x 1 inch Inner diameter: 12mm Linear bearings are widely applied to electronic equipment, food machinery, packaging machinery, printing machinery, textile machinery, equipment, robots, tools, machines, machine tools, three-dimensional automotive and digital measuring equipment and other precision equipment or special machines for industry.