| Business | Phone |
| Argosy Tool & Manufacturer Inc 3003 Hollow Ridge Dr, Eaton Rapids 48827 | (517) 663-2220 |
| Satterlee Machining Co 5890 Plains Rd, Eaton Rapids 48827 | (517) 663-2170 |
| Rapids Tool & Engineering 10618 Petrieville Hwy, Eaton Rapids 48827 | (517) 663-8721 |
| Dowding Industries 449 Marilin Ave, Eaton Rapids 48827 | (517) 663-5455 |
| Eaton Tool & Die 7221 5 Point Hwy, Eaton Rapids 48827 | (517) 663-3608 |