Machine Roller Kit Load Capacity 48 000 lb For Surface Type Any Surface For Movement Type Swivel/Rigid Top Plate Length 5 7/8 in Top Plate Width 5 7/8 in Top Plate Surface Rubber Padded Top Plate Type Swivel with Lock Caster/Roller Configuration (4) Rollers Frame Material Steel Number of Decks 1 Overall Length 60 3/4 in Overall Width 6 3/8 in Overall Height 5 1/2 in