BQLZR Linear Ball Bearing Set w/ 8x400mm Shaft Optical Axis for 3D Printer Pack of 4

Features: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information; 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed. 3. This product includes 4 linear ball bearings,4 linear shaft optical axis and 8 linear rail support.It can meet your different needs. 4. Wide application: mainly used in stepper motors,machine tool guide rails and 3D printers and other equipment. 5. High-quality materials:high-quality metal materials are selected,which are strong and wear-resistant,and are easy to install. Specifications: Material:Steel Color:Silver Brand name: BQLZR Weight:1050g Size: Linear Ball Bearing: Inner diameter: 8mm/0.3Inch Linear Rail Support: Inner hole: 8mm/0.3Inch Linear Shaft Optical Axis: 8x400mm/0.3x15.7Inch(DiaxL) Package include: 4 x Linear Ball Bearing 4 x Linear Shaft Optical Axis 8 x Linear Rail Support