I use a standard strap but I enlarge the hole slightly with a leather hole punch. I use a 7/16 punch I got from Amazon for less than ten bucks. Center it over the existing hole and place on a sturdy surface (I use scrap of 4×4) and strike a time or two with a hammer. My straps stay on with no problem, I do have to work them into the groove on the jack from time to time, and that’s only the thicker straps.