Trucks for 2 gas cylinders up to 12 inch diameter. These units are two cylinder type with 10.5 inch diameter pneumatic main wheels . Triple handle design helps control the high center of gravity created by the extensive structural framing supplied to make these units safe when lifted by hoist rigs. Construction is heavy 11 gauge HR Steel with 3/16 inch thick steel supports, 3/8 inch thick hoist plates and round steel tube. Heavy poly straps with steel cinch buckles, 2 per cylinder station and cylinder locking system provides support. Includes 3 inch diameter fold-down rear casters for added stability and safety. Powder coated for durability. Fully welded, Made in USA.