The Kupo Male Adapter Stud 5/8" w/3/8"-16F easily converts a male 3/8"-16 to a 5/8" baby with a 1/4"-20 thread (Standard Stand Top). It can be used when you to want a baby pin mount on a tripod. It works well with Convi and Super Claw Clamps. It can place a baby spigot on top of numerous items like suction cups.