The Herm. Sprenger Extra Links for Dog Prong Collars may be added or removed for the proper fit. Sophisticated production techniques, consistent quality control, superb craftsmanship and the highest quality raw materials make Herm. Sprenger German chain products superior.
| Neck Size (in) | Prong Length (in) | Chain Length (in) |
| 14" | 0.09" | 16" |
| 18" | 0.12" | 20" |
| 20" | 0.13" | 22" |
| 22" | 0.15" | 24" |