The 1225 Mitchell Base Adaptor with Clamp allows you to adapt the Skyline 70 Fluid Head to a Mitchell flat base tripods. Simply attach the Mitchell Base Adaptor to the Skyline 70 150 claw ball base using the 3 x socket cap screws supplied and you're set to go. The adaptor ocates easily into a flat base tripod with 3/8" location pin. There is also an adjustable 3/8" stud which will accommodate various tripod base sections.