Enhance the functionality of your dog's prong collar with the versatile Herm. Sprenger Extra Links. These links offer the flexibility to adjust the collar for a precise and comfortable fit on your dog. Sold in sets of three, these links are available in fine, medium, heavy, and extra-heavy gauges to cater to various requirements. The reputation of Herm. Sprenger is grounded in a fusion of sophisticated production methods, rigorous quality control, impeccable craftsmanship, and the use of the finest raw materials.