West Coast Paracord's Swivel Snap hooks have a sleek brass finish that make them great to use on purses, bags, backpacks, lanyards, and much more. These are made of metal for quality and long-lasting strength. The full 360-degree swivel eye helps prevent tangles and are very easy to connect and disconnect. Each size option is measured from the inside of the bottom hole and these sizes are 1/4”, 3/8”, 1/2” and 3/4” available in pack sizes of 2, 5, 10, 15, 20, or 25.