Item 17093 Your Price today: $ 6.08 Currently out of stock. Call or e-mail for availability info, or else click here for a form to tell us how many you wanted to order. Grow your training collar with your dog. Pack of 3, 2.2 mm, chrome plated link for adding to the length of the Small Prong Training collar. Each link measures 1 inch long. Price is for three individual links.