SIZE: 16B 5/8 inch diameter ball bearing roller FEATURES: 360 degree universal transfer bearing CAPACITY: Load bearing capacity of 33.07 lbs NOTE: Two screw holes in each bearing; screws are not included Ball Transfer Unit features an omni-directional load-bearing spherical ball mounted inside a restraining fixture. The 360-degree universal transfer bearing is suitable for curved work created on band saws and router tables. Product Name: Ball Transfer Unit Weight: 260g Model: 16B Capacity (Max.): 15kg / 33.07lb Ball Diameter: 5/8-inch Dimensions: 45 x 19mm (1.8 x 0.75-inch) (Max. D * H) Mount Hole Diameter: 4mm (0.16-inch) Mount Hole Distance: 30mm (1.2-inch) Color: Silver Material: Carbon steel Package Contents: 10 x Bearing Steel Roller Ball Note: The package includes only the items listed above. Other products are not included. Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3cm.