Adding to the versatility of the popular Kupo 10” and 11” Rocks Arms are a series of interchangeable accessories. The Kupo 5/8in (16mm) Baby Stud Tip for Rocks Arm is an interchangeable stainless steel 5/8”(16mm) stud with a female 1/4”-20 thread that can be mounted on each end of the Rocks Arm to make it compatible with equipment that comes with a 5/8”(16mm) socket.