Three Dual-Wheel Swivel Casters with 2" Elastomer Wheels with Ball Bearings Attached to A Swivel Top Plate For Extra Swiveling Action - 1,200 lb. Capacity per Assembly - 5" Overall Assembly Height - Mounting Plate Size: 4-1/2" x 6-1/4" - Bolt Hole Centers: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4" - THIS PRODUCT HAS A THREE WEEK LEAD TIME