This snap hooks is just beautiful. It is an oval gate style with a super-shiny rose gold / copper finish. The strap opening is 1.5 inches. It opens by simply pushing in on the gate. The hook will open enough to accommodate a ring that’s up to 5 mm thick. 2″ long, 9/16″ wide at the hook end, 1-15/16″ wide (outside measurement) at the strap end. It is made for a 1-1/2″ strap.