DERRACO ENGINEERING of Bushing Holder & Anvil Base Bullet Comparator & Headspace Gauge (Single Screw Type Bushing Holder)
| Country | USA |
| Brand | Monstrum |
| Manufacturer | Monstrum |
| Binding | Apparel |
| ItemPartNumber | SR-30-P120 |
| Size | 1.20 inch |
| UPCs | 704715312730 |
| EANs | 0704715312730 |
| ReleaseDate | 0000-00-00 |