Have a female jointed water pipe but want to use a female jointed bowl or dome? The Step Up 90° Male to Male Adapter enables you to do so! With two male jointed sides, this glass adapter can turn your female jointed dab rig or bong into a male jointed one. Found a magnificent female jointed bowl you really want but your bong only takes male? Insert the Step Up 90° Male to Male Adapter and voila! Now you can use a female bowl on your female bong. There are three sizes to choose from, including one that not only turns your bong into a male joint, but also changes the size to 14mm or 18mm.