| Business | Phone |
| Bartlett Bearing Co 4320 H St, Philadelphia 19124 | (215) 743-8963 |
| Kingsbury Inc 10385 Drummond Rd, Philadelphia 19154 | (215) 824-4000 |
| Philadelphia Ball & Roller 400 N 6th St, Philadelphia 19123 | (215) 574-0900 |
| Pruyn Bearings Co Inc 1324 Frankford Ave, Philadelphia 19125 | (215) 426-7200 |