Totally 15 screw adapters in one package! Include:5 * 1/4"Female-3/8"Female spigot adapter,5 * 1/4"male-3/8"male screw adapter,5 * 1/4"Female-3/8"male screw adapter Help you gain more rig combination possibility and freedom in your photo shooting! Lightweight,easy to carry,they can even serve as back up for the counterpart in your rigs. Made of good quality metal, it can help you connect rigs of 1/4" or 3/8" screw thread within minutes! Great value in both versatility and funtionality.