Item Type: VGroove Bearing Flat Mount Model: 3225-0001-0001 Material: Aluminum Size(LxWxH): Approx. 40 x 16 x 4mm / 1.6 x 0.6 x 0.2in Spacing Between 2 Holes: Approx. 8mm / 0.3in Spacing Between 5 Holes: Approx. 32mm / 1.3in Width Between 2 Holes: Approx. 8mm / 0.3in Length Between Upper 2 Holes: Approx. 24mm / 0.9in Uses: Robotics field, V-groove bearing mounting fixtures. Package List 2 x VGroove Bearing Flat Mount 1This flat mount provides threaded holes spaced 24mm apart, so V-groove bearings can be installed appropriately to each other to run on V-rails 2With two independent mounts, you can freely choose the distance between the paired V-groove bearings 3They can be put together to achieve maximum stroke, or they can be separated to counteract the forces that the long arms may exert on the components 4This V-groove bearing mounting fixtures are suitable for robotics, very practical 5Made of excellent aluminum material, light weight, come with good strength and good corrosion resistance