| Business | Phone |
| Barnes International Inc 814 Chestnut St, Rockford 61102 | (815) 964-8661 |
| Toolmasters 1400 Railroad Ave 2, Rockford 61104 | (815) 968-0961 |
| Specialized Boring Systems Inc 4799 Colt Rd, Rockford 61109 | (815) 874-8661 |
| Circle Cutting 5044 27th Ave, Rockford 61109 | (815) 387-0054 |
| Redin Production Machine 2433 20th St, Rockford 61104 | (815) 398-1010 |
| Industrial Form Grinding Co 3543 Kishwaukee St, Rockford 61109 | (815) 229-0787 |
| Ingersoll Milling Machine Co 707 Fulton Ave, Rockford 61103 | (815) 987-6000 |