The holes are for stitching the hook on to the curtain. The hook can connect to your curtain ring or maybe a keep track of runner, allowing for the curtain to hold and shift effortlessly. Measure the space through the best of the hook to The bottom in the pin. https://kindsofcurtainhooks45444.glifeblog.com/28763277/different-types-of-hooks-for-curtains-can-be-fun-for-anyone