The Kupo KS-200 Stand Adapter enables you to mount a light fixture or accessory with a baby 5/8″ receiver to any stand with a junior 1/8″ receiver, such as the Kupo Master C Stand Turtle Base. It's perfect for mounting a light fixture or accessory low to the ground. Solid steel construction gives it superior strength. The bottom of the adapter is drilled with a safety pin hole for use when hanging it from a coupler or clamp with a junior receiver.
(KPKS200)
Kupo KS-097 Baby Ballhead Adapter with 3/8'' male thread and 5/8'' receiver 

