4 in 1 transfer chair,wheelchair,commode chair,bath chair Spindle: 2.0 Medical chrome plated steel pillar Casters: Medical mute casters Technology: Customized in Taiwan and German technologies Casters diameter: Front casters: 5 Inches; Rear casters: 3 Inches Main frame: 2.0 Electronic steel pillar Back-rest: ECO and Disposable Blow Molding Medical PE Seat Plate: ABS and 2.0 Electrophoresis steel board Handrail: Eco-rubber Complete machine: Electrophoresis waterproof materials Open degree:360° Size:700*470*940(mm) Brake type:Four casters by foot braking Net Weight:18kgs