Flow Rail Section Description Straight Overall Width 5-1/4 In. Overall Length 10 ft. Frame Capacity per Foot on 5-Ft. Centers 251 lb. Frame Capacity per Foot on 10-Ft. Centers 27 lb. Center to Center Roller Spacing 1-1/2 In. Wheel Dia 1-15/16 In. Wheel Design Staggered Wheels per Foot 16 Bearings Ball Skatewheel Material Steel Uses Wheel No Skate Wheel No WSK 75 1-15/16X13/16 G90 Frame Style C-Channel Frame Finish Galvanized Frame Material Steel Rail Length 10 ft.