This black plastic loop was offered as a strap keeper for the original Betta Belt, which did not come with one built-in. It is designed for 1.5" wide webbing. The plastic loop is slipped over the end of the strap and slides into the position desired. This strap keeper fits quite snugly on the belt, since the elastic webbing material used for our straps is fairly thick. We do not manufacture this item--we are simply offering it at a nominal fee as an option for our customers.