Our American Made braided nylon snap chokes are made of super-soft tubular nylon. There is a 3/4-inch ring sewn at one end and a nickel-plated spring snap at the other. A 1/2-inch "live" ring floats across the choke for the snap to attach, while your lead can attach to the 3/4-inch ring. To get the perfect measurement for your dog, measure around his neck where the collar sits and add 2-3 inches.