A tri glide, although seemingly insignificant, can work as an effective adjuster, connector, or buckle. The use of tri glides is common in belts, straps, and pet collars. They allow users to make a variety of adjustments. You can buy tri glides in different sizes when shopping on eBay, and you should look for options in accordance to the size and thickness of the webbing or straps with which you intend to work. The 10 mm tri glides are ideal when working with cat collars and 20 mm to 25 mm tri glides work well with dog collars. You can also find tri glides in other sizes, like 15 mm, 19 mm, 25 mm, and 50 mm. While most tri glides contain plastic, you can find variants that use metal. Tri glides tend to sell in sets, and you can find sets that include as few as five to as many as 100. A broken tri glide can lead to unpleasant circumstances, so do not compromise on quality.