Internalsize: 2065 *900*370/640mm Externalsize: 2090*1000*370/640mm Back rest: 0° -70° Knee rest: 0° -35° Height adjustable: 370/640 mm 1. Head/foot ends board punch shaped at one time, static powder coating. 2. Aluminum alloy folding guardrail, single touched handle. 3. Safe pressure actuator. 4.4 truckles full centrol brake system.