MATERIAL SPECIFICATION：

1.   Base skeleton: 25.4mm outside diameter steel pipe surface plating

2.   Cushion: a 9cm thick high-density foam material, the outsourcing fire safety plastic skin, diameter 38cm

3.   Foot ring: Round, 19mm diameter steel pipe, 38cm OD weld on four legs tube structure durable

4.   Tooth bar structure height adjustment from 45cm-70cm

5.   Attached four 50mm diameter plastic wheels.