| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | McKees Rocks Forgings Inc. | USA | |
| 2 | Caster Concepts Inc. | USA | |
| 3 | Reliance Foundry Co. Ltd. | USA | |
| 4 | Trew Industrial Wheels Inc. | USA | |
| 5 | TANDEMLOC Inc. | USA | |
| 6 | Mueller Impacts Company Inc. | USA | |
| 7 | IBC Advanced Alloys | USA | |
| 8 | MHS Caster & Equipment Co. | USA | |
| 9 | The Wheel Group | USA | |
| 10 | Hamilton Caster | USA | |
| 11 | Winkle Industries | USA | |
| 12 | PJ Company | USA | |
| 13 | Faultless Caster Div./ Hickory Hardware | USA | |
| 14 | TW Wheels Inc. | USA |
