DOG COLLAR EXTRA LINKS: They are great for extending the length of your dog's collar and making the collar suitable for dogs of all ages. Protecting the airway and neck sensitive area avoids breath difficulty. No need to change the whole no pull collar, the collar will become heavy.

SUFFICIENT QUANTITY: The package contains 4 pack dog training collars links in 2.25mm, each link will add 1 1/5 inches (3 cm) to the total length of the collar, enough quantity to use and replace, provides convenience to extend the length of dog collar.

NOTICE: It is mainly suitable for training collars with a chain diameter of 2.25mm. Please make sure that the chain diameter of your dog training collar is the same as the chain diameter of our product before buying, so as to avoid mistaken purchase.

DURABLE AND REUSABLE: Dog collar links made of steel chrome plated, durable, with good rust resistance and corrosion resistance, not easy to break or fade, can be used for a long time many times.

SAFE TO USE: Dog collar extra links end smooth and rounded, no sharp edges, to ensure that when training will not hurt your dog. 2.25mm links are suitable for S size dog collars, 3.20mm links are suitable for M/L size dog collars, and 4.00mm links are suitable for XL size dog collars.