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TWIST | Summary | 
| Stock | Price | HCPCS | ||
| Model | ||||
| Abduction Frame | 
| Stock | Price | HCPCS | ||
| Transit Option | 
| Stock | Price | HCPCS | ||
| Frame Finish | ||||
| Caster Arm Finish | ||||
| Anodize Color | 
| Stock | Price | HCPCS | ||
| Seat Width Range | ||||
| Seat Width | ||||
| Seat Depth Range | ||||
| Seat Depth | ||||
| Front Seat Height | ||||
| Rear Seat Height | 
| Stock | Price | HCPCS | ||
| Front Angle | ||||
| Seat to Footrest | ||||
| Footrest Type | ||||
| Footrest Width | 
| Stock | Price | HCPCS | ||
| Rear Wheel Spacing | ||||
| Camber Plugs | ||||
| Extra Spacers | 
| Stock | Price | HCPCS | ||
| Camber | ||||
| Camber Tube | 
| Stock | Price | HCPCS | ||
| Rear Wheels | ||||
| Spoke Color | ||||
| Rear Wheel Anodize Color | ||||
| Axles | ||||
| Rear Tires | ||||
| Handrims | ||||
| Tab Length | 
| Stock | Price | HCPCS | ||
| Wheel Locks | ||||
| Set Uni-Lock | ||||
| Wheel Lock Extension Handles | 
| Stock | Price | HCPCS | ||
| Upper Body Positioning | ||||
| Seat Belt | ||||
| Seat Belt Optional Mount | ||||
| Calf Strap | 
| Configuration Reference | 
Rear Wheels  | 
?  | 
| Rear Wheel Size Compatibility | |
| Rear Wheel Size | Rear Seat Height | 
| 18" (400) | 12" - 17" (30.5 - 43.2 cm) | 
| 20" (451) | 13" - 17.5" (33 - 44.5 cm) | 
| 22" (501) | 14" - 18.5" (35.6 - 47 cm) | 
| 24" (540) | 15" - 19.5" (38.1 - 49.5 cm) | 
Measure from floor to top of seat tube at the back post. Adjusts in 0.5" (1.3 cm) increments.
TWRSH1  | 12" (30.5 cm) 12 12.5" (31.8 cm) 12.5 13" (33 cm) 13 13.5" (34.3 cm) 13.5 14" (35.6 cm) 14 14.5" (36.8 cm) 14.5 15" (38.1 cm) 15 15.5" (39.4 cm) 15.5 16" (40.6 cm) 16 16.5" (41.9 cm) 16.5 17" (43.2 cm) 17 17.5" (44.5 cm) 17.5 18" (45.7 cm) 18 18.5" (47 cm) 18.5 19" (48.3 cm) 19 19.5" (49.5 cm) 19.5  | STD  | 
