| Business | Phone |
| Estes Design & Mfg Inc 470 S Mitthoeffer Rd, Indianapolis 46229 | (317) 899-2203 |
| Herman & Co 1100 E Maryland St, Indianapolis 46202 | (317) 269-2180 |
| P H Drew Inc 2450 N Raceway Rd, Indianapolis 46234 | (317) 297-5152 |
| Merrill-Stone Inc 1882 S County Road 1050 E, Indianapolis 46231 | (317) 839-8396 |
| Micro Metal Corp 3035 N Shadeland Ave, Indianapolis 46226 | (317) 543-5980 |