Flow Rail Skate Wheel Flow Rail Type Overall Length 5 ft Overall Width 4 7/8 in 2 15/16 in Overall Height 40 lb/ft (5 ft Supports) Maximum Load Capacity Wheels per Foot 4 Frame Material Steel Steel Skate Wheel Material 2 in Wheel Diameter Inline Wheel Alignment 3 in Roller Spacing Light-Duty Left Hand Flange Side