I make my own swivels for trapping and have a jig made to produce Sterling swivels. Instead of using the screw in eyelets I use these long shanked swivels made from 20d nails. A hole drilled thru the middle of the cap lets the hook up swivel freely and is a lot stronger than the small screw in eyelets. These swivels can be made in a vise with channel locks. Try it.