1, external dimensions / cm : 72 × 62 × (97 ~ 147), the main use of high-quality steel, high-density sponge, leather, etc. 2、Treading board size (length×width)/cm: 42×40 3、Height adjustment range of handrail bar：50cm 4、Adjustment angle of footrest board: 9 °, 20 °, 30 °, 40 °. 5、Treading board rated load: 2000N 6、Correcting and preventing foot drop, foot inversion, foot ectropion and other deformities.