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Model  | Step  | Open size(cm)  | Folded size (cm)  | Maximu pedal heightm (cm)  | Pedal width (cm)  | Pedal depth (cm)  | Weight (kg)  | Packing size (cm)  | ||
| W | D | H | ||||||||
| HBDB-05-03 | 3 | 48 | 91 | 111 | 48*17*120 | 111 | 33 | 20 | 6.9 | 50*19*122 | 
| HBDB-06-04 | 4 | 52 | 109 | 138 | 52*17*149 | 138 | 33 | 20 | 8.2 | 54*19*151 | 
| HBDB-07-05 | 5 | 56 | 127 | 166 | 56*17*178 | 166 | 33 | 20 | 9.8 | 58*19*180 | 
| HBDB-08-07 | 7 | 64 | 162 | 220 | 64*17*235 | 220 | 33 | 20 | 12.6 | 66*19*237 |