Hi again! I've bought this prong collar 2.25 mm for walking of my Staffordshire Bull Terrier. I needed it because she required much force to walk on a leash. At first I used a choker, but it did not go for her huge strength. She was also unsocialized properly, and attacked dogs while walking. Then I decided to buy a prong collar with you, cause the price here was the most appropriate. I like also that I can get extra links for it here at once. It was delivered within 6 days. The prong collar has a great benefit, my dog obeys when I call her and I can distract her attention from other dogs when we come close to them. In general, now we can control her better with the prong collar and she behaves much better in walking. Recommend it.