1、It has strong interchangeability, supports the interchangeability of guide sliders, high accuracy and small error. 2、The rail adopts DB back-to-back configuration, the slider moves smoothly, and the operation is simple and convenient. 3、Both ends are equipped with thickened dust-proof pads, which can effectively prevent dust from entering and have a long service life. 4、This linear slide rail is applied to many machines that need precise linear motion, such as automation equipment and precise measuring equipment. 5、Made of high hardness cast iron, it is durable, wear-resistant and corrosion-resistant. Condition: 100% Brand New Item Type: Guide Rail Material: Cast Iron Slider Color: Black Load Direction: Radial Thrust Bearing Mechanism: Hydrostatic Bearing Lubricant: Oil Lubrication Oil Lubrication Method: Drip Lubrication Lubrication Status: Boundary Lubrication Usage Properties: High Speed Weight: Approx. 2115g / 74.6oz Size: Linear Guide Rail: Approx. 40x1.5x1.5cm / 15.7x0.6x0.6in Slide Block: Approx. 6x3.5x2.5cm / 2.4x1.4x1.0in 2 x Linear Guide Rail with 4 Slide Block 1 x Bag of Installation Accessories