Two-Hole, metal and Flange-mounted 16mm ball bearing resting on individual support bearings and is Perfect for most industrial transfer applications. Ball transfer unit can also be used in a variety of non-industrial applications, including retail store displays and airport luggage transfers. Features: Features a 360 degree swivel mounting plate attached to a double wheel roller system. Ball support cup is hardened and plated, protective cover assures low torque and ., Weight: 4.5415225972 pounds, Manufacturer: Reeatel