Five function electric hospital bed 1,function: the whole bed HI-LO control, trend & reverse trend, adjustable back/leg. 1 ... steel tubes,nice and elegant,firm and durable.5,Silent casters(optional),with opposite angle fasterners,flexible rotation and easy ... strong thrust,low noise,waterproof and dustproof.7,Central-controlling casters for easy operation and reliable fastening.8,Trendelenburg,reversr ...