double crank bed specifications: 1.desk-top double crank bed, 2.epoxy powder-coated cold -roll steel board ,4 parts(wooden deck board is optional) 3.4pcs mute moving castors,2 of them can be locked (with brakes)to keep bed body stable. 4.2 plastic hand rockers ,hiden style, can be hidden in bed body when no use 5.aluminium alloy side rails, can be folded down. 6.over bed table, can be folded . 7.shelf for shoes or luggage. 8.hole in bed frame for I.V. rod . 9.stainless steel I.V.stand .height is adjustable. 10.mattress : thickness 8cm or 10 cm ,as buyer's requests.cover : leather or water-proof cloth. inner : high density sponge . 11.size: 2180*980*520mm