| Business | Phone |
| Yarborough Precision Ball 14220 E 10 Mile Rd, Warren 48089 | (586) 776-0752 |
| Modern Broaching Svc Inc 24344 Gibson Dr, Warren 48089 | (586) 755-2160 |
| Metro Precision 24051 Gibson Dr, Warren 48089 | (586) 757-8898 |
| Landis Gardner 5523 E 9 Mile Rd, Warren 48091 | (586) 497-6066 |