Wheel Diameter
| 02 | 2″ |
| 03 | 3″ |
| 04 | 4″ |
| 05 | 5″ |
| 06 | 6″ |
| 08 | 8″ |
Mounting Type
| P | Swivel top plate |
| F | Fixed top plate |
| G | Grip ring stem |
| T | Threaded stem |
| E | Expanding stem |
| S | Square stem |
| R | Round stem |
| H | Hollow kingpin |
Tread Width
| 1 | 3/4″ |
| 2 | 1″ |
| 3 | 1 1/4″ |
| 4 | 1 1/2″ |
| 5 | 2″ |
Wheel Material
| Y | Nylon |
| P | Polypropylene (PP) |
| U | Polyurethane (PU) |
| R | Thermoplastic Rubber (TPR) |
| C | PVC |
| S | Rubber |
| T | Rubber cast iron core |
| K | Polyurethane cast iron core |
| Z | Cast iron |
Wheel Bearing
| A | Plain bore |
| B | Sleeve (Bushing |
| D | Delrin |
| E | Precision dual ball |
| F | Precision ball |
| G | Roller (Needle) |
Brake Type
| 0 | No brake |
| 1 | Side lock brake |
| 2 | Top lock brake |
| 3 | Total steel lock brake |
| 4 | Total plastic lock brake |
| 5 | Swivel brake (Position brake) |
| 6 | Tread lock brake |