2Pcs SBR12400mm 12mm Linear Slide Rail Shaft 4Pcs SBR12UU Bearing Block

Descriptions: The linear slide rail shaft is made of high quality carbon steel, and the bearing block is made of aluminum alloy, sturdy and durable . Perfect for your DIY CNC routers, no more unwanted errors in your machining work mills, lathes. Features: The linear slide rail shaft is made of high quality carbon steel, and the bearing block is made of aluminum alloy, sturdy and durable. Industrialgrade standard SBR block, with high precision linear bearing inside. Surface silver plating treatment, beautiful antirust, hardness can as high as HRC62, more durable. The adjusting handle can adjust the tightness of the slider. Standardized processing, ideal for guide rail positioning. Perfect for your DIY CNC routers, mills, lathes. Aluminum alloy support rail with predrilled holes for ease of mounting. Specifications: Material: high carbon steel, Aluminum alloy Model: SBR12 Rail shaft length: 400mm 15.75inch Rail shaft diameter : 12mm 0.47inch Block inner diameter: 12mm 0.47in Block outer diameter: 40mm 1.57in Weight:1900g Package Included: 2 x Linear Slide Rail Shaft 4 x Bearing Slide Block .The linear slide rail shaft is made of high quality carbon steel, and the bearing block is made of aluminum alloy, sturdy and durable Industrialgrade standard SBR block, with high precision linear bearing inside Surface silver plating treatment, beautiful antirust, hardness can as high as HRC62, more durable The adjusting handle can adjust the tightness of the slider Standardized processing, ideal for guide rail positioning