| Business | Phone |
| Great Lakes Tool Grinding Inc 2703 W 21st St, Erie 16506 | (814) 838-2659 |
| Lake Shore Grinding & Manufacturer Co 2230 Caughey Rd, Erie 16506 | (814) 838-3539 |
| National Tool Grinding 100 State St # 312, Erie 16507 | (814) 455-9400 |
| Sea Gate Grinding & Manufacturer 2885 Flower Rd, Erie 16509 | (814) 868-1159 |