| Business | Phone |
| Precision Cutter Grinding Co 25245 Mound Rd, Warren 48091 | (586) 754-3900 |
| Precision Sharpeners 11123 E 9 Mile Rd, Warren 48089 | (586) 757-6162 |
| N-P Grinding Inc 3700 E 10 Mile Rd, Warren 48091 | (586) 756-6262 |
| M C Pro Tool Inc 22000 Sherwood Ave, Warren 48091 | (586) 758-2028 |