| Business | Phone |
| Watkins Manufacturing 10565 Medallion Dr, Cincinnati 45241 | (513) 563-0440 |
| Bruce W Stowe Co 9093 Cherry Blossom Ln, Cincinnati 45231 | (513) 931-8376 |
| Greenfield Industries Inc 4030 Mt Carmel Tobasco Rd #216, Cincinnati 45255 | (513) 528-9444 |
| National Machine Tool Co 2900 Massachusetts Ave, Cincinnati 45225 | (513) 541-6682 |
| Productive Carbides Inc 10265 Spartan Dr # K, Cincinnati 45215 | (513) 771-7092 |
| Eltool Corp 1665 Central Ave, Cincinnati 45214 | (513) 723-1772 |