Features Linear Motion Ball Bearing is a linear motion system that is used to in conjunction with a cylindrical shaft for infinite travel. Since the carrier ball is in point contact with the shaft, the load used is small. The steel ball rotates with a very small frictional resistance, so that high-precision smooth motion can be obtained. Made of high quality stainless steel material, through chromed treatment, wear resistant and durable. Widely used in CNC equipment, electronic machinery, sports equipment, medical machinery, packaging machinery, food machinery, printing machinery, automation equipment, etc. Specification:Condition: Brand NewItem Type: Square Flange Linear Motion Ball Bearing BushingModel: LMK6LUU, LMK8LUU, LMK10LUU (Optional)Inner Diameter: 6/8/10mmMaterial: Stainless Steel (Chromed)Hard Band Depth: 0.8-0.3 mmStraightness: 1000mm ≤3.5 umRoundness: ≤0.003mm Package List:1 x Bearing Package List