| Business | Phone |
| Walker National Inc 811 Kinnear Rd, Columbus 43212 | (614) 481-0007 |
| Bud Corp 7079 Huntley Rd, Columbus 43229 | (614) 846-6192 |
| Nicklaus Machine Co 3975 Karl Rd, Columbus 43224 | (614) 262-7223 |
| Morone Machine Inc 1902 Progress Ave, Columbus 43207 | (614) 294-5610 |
| Funk Fine Cast 399 W State St, Columbus 43215 | (614) 469-0156 |