1.Tighten the screws more safely, safety tightening screws, strong and solid durable
2.Stainless steel quick release pin, stainless steel fixed pin easy to remove
3.WIDTH CAN BE ADJUSTEDbeam connection fof structure of pressure plate is convenient to adjust
4.Heavy duty brake cardan casters Heavy PU castor for safely braking
5.PORTABLE FOLDING DESIGN Adjustable height adjustable span quick disassembly the fast