2PCS Linear Rail 0.78-66 Inch, Linear Bearings and Rails with 4PCS HSR20 Bearing Block, Linear Motion Slide Rails plus for DIY CNC Routers Lathes

3PCS Linear Rail 2-167.6 cm(0.78-66 Inch), Linear Bearings and Rails with 4PCS HSR20 Bearing Block, Linear Motion Slide Rails plus for DIY CNC Routers Lathes Mills, Linear Slide Kit fit X Y Z Axis Fine Workmanship Heavy-Duty Material Complete Linear Guiding System Simple Installation Quiet Operation Extensive Application Rail Shafts: HSR20, 66.9 in / 1700 mm,Type: Linear Actuator,Gross Weight: 20 lbs / 9.1 kg,Package Dimensions: 67.3 x 3.5 x 3.1 in / 171 x 9 x 8 cm