Valley craft double cylinder truck with brake spark-resistant aluminum cylinder truck for safe, efficient handling of pressurized tanks. Heavy-duty multi-tank frame fits over the regular box frame for use with most standard size cylinders. Balanced frame roll easily on 12″ x 3-1/2″, fully-pneumatic tires and features hand brakes for added safety. 1″ steel axle is enclosed in protective housing with sealed bearings. Trucks are constructed of 1-5/16″ o.d. Aluminum tubing with notched joints and solid welds. 600-lb. Capacity.