These suspenders parts are designed for widths between 20mm and 38mm. If they don't fit perfectly - return them within 30 days for a full refund.
These suspenders hooks are for reattaching when yours come off or modifying an existing pair. You could also purchase these if you are making your own homemade suspenders. They make suspenders attachable to belt loops which provides guaranteed support. You get 20 hooks per order.