| 1 | Mid-States Manufacturing & Engineering Inc. | | USA |
| 2 | Von Kamecke Corp. | | USA |
| 3 | Gleason Corp. OEM Wheel & Caster Div. | | USA |
| 4 | Roadrunner Rubber Corp. | | USA |
| 5 | Albion Inc. | | USA |
| 6 | American Plastics Group Inc. | | USA |
| 7 | Wesco Industrial Products LLC | | USA |
| 8 | Trew Industrial Wheels Inc. | | USA |
| 9 | E.R. Wagner Mfg. Co. | | USA |
| 10 | P&H Casters Company Inc. | | USA |
| 11 | Jescraft | | USA |
| 12 | McLaren Industries | | USA |
| 13 | Brennan Equipment & Manufacturing Co. | | USA |
| 14 | Hamilton Caster | | USA |
| 15 | ROLL-TECH LLC | | USA |
| 16 | Aie Caster Company Inc. | | USA |
| 17 | Bond Casters | | USA |
| 18 | Service Caster Corp. | | USA |
| 19 | MHS Caster & Equipment Co. | | USA |
| 20 | Irwin Car & Equipment | | USA |
| 21 | Superior Tire & Rubber Corp. | | USA |
| 22 | R & K Industrial Wheels | | USA |
| 23 | PJ Company | | USA |
| 24 | Custom Engineered Wheels | | USA |
| 25 | Hoosier Wheel & Stamping | | USA |
| 26 | Mighty Lift Inc. | | USA |
| 27 | TANDEMLOC Inc. | | USA |
| 28 | Dersheng USA Inc. | | USA |
| 29 | Faultless Caster Div./ Hickory Hardware | | USA |
| 30 | The Fairbanks Company | | USA |
| 31 | Martin Wheel Co. Inc. The | | USA |
