Select from the fasteners below to find out more product details and view tool compatibility. 3/8 Stainless Steel Hog Rings for Crab pots, Cages, Traps, Fencing, Sausage Casings, Rabbit Cages (100 Count bag-3oz)Made in the USA 4.5 out of 5 stars 36 $9.99 $ 9 . Galvanized Metal Fence Hog Rings Chain-link Fence. to meet your particular requirements. Ring sizes can be measured physically by a paper, plastic, or metal ring sizer (as a gauge) or by measuring the inner diameter of a ring that already fits.. Ring sticks used to measure the inner size of a ring can be made from a variety of materials including plastic, delrin, wood, aluminium, aluminium with wooden handle and so on.Digital ring sticks also exist. Grab - twist - or cut the old hog-rings. // -->