The following are some common bull socket models: 1. Bull socket GN-8012. Bull socket GN-801A3. Bull socket GN-801B4. Bull socket GN-801C5. Bull socket GN-801D6. Bull socket GN-801E7. Bull socket GN-801F8. Bull socket GN-801G9. Bull socket GN-801H10. Bull socket GN-801I11. Bull socket GN-801J12. Bull socket GN-801K13. Bull socket GN-801L14. Bull socket GN- 801M15. Bull socket GN-801N16. Bull socket GN-801O17. Bull socket GN-801P18. Bull socket GN-801Q19. Bull socket GN-801R20. Bull socket GN-801S. The above are only some models. The specific models need to be based on actual needs. choose.