General description Ball Transfer Units are omni-directional load-bearing spherical balls mounted inside a restraining fixture, designed for smooth and efficient movement of items. This set includes 18 pieces of 5/8-inch bearing steel roller ball flange units, ideal for use in various applications such as curved work on band saws and router tables. Technical specifications Model: -16B Color: Silver Tone Weight: 260g/Set Capacity (Max.): 15kg/33.07lb Ball Diameter: 5/8-inch Dimension: 45 x 19mm (1.8-inch x 0.75-inch) (Max. D*H) Mount Hole Diameter: 4mm (0.16-inch) Mount Hole Distance: 30mm (1.2-inch) Measurement allowed error: +/- 1-3cm Other information Package Content: 18 pcs x Ball Transfer Unit Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.