Features: 1Strong interchangeability support for guide rail slide block interchange. 2With high accuracy the accuracy error within one meter does not exceed 0.02mm. 3The fairway adopts the DB back-to-back configuration to improve the steel durability of the product. 4The bottom reference surface of the rail is free of corrugation making it easier to use and operate. 5The dust proof pads on both end are thickened to effectively prevent dust from entering and prolong the service life. Specification: Condition: 100% Brand NewItem Type: Linear Guide RailSlide Block Color: BlackLoad Direction: Radial ThrustBearing Mechanism: Hydrostatic BearingLubricant: Oil LubricationOil Lubrication Method: Drip LubricationLubrication State: Boundary LubricationBearing Bush Material: Cast IronOperating Characteristic: Fast and quickLinear Guide Rail Size: Approx. 50 x 1.5 x 1.5 cm / 19.7 x 0.6 x 0.6 inSlide Block Size: Approx. 6 x 3.5 x 2.5 cm / 2.4 x 1.4 x 1.0 inWeight: Approx. 2437g / 86oz Package List: 2 x Linear Guide Rail with 4pcs Slide Block1 x Installation Accessories Kit