Convert your old ballhead to a Jobu Design compatible one with the QRR-1 Quick Release Clamp
An Arca-Swiss compatable Quick Release Clamp suitable for replacing the old square, rectangular, trapezoidal or otherwise proprietary clamp on your ballhead. This Clamp is 50mm (2") wide - see QRR-125 or QRR-138 for a studded mounted alternatives.
QRR-1 ¼" Standard countersunk hole that will work with either a ¼"-20 flathead bolt or a 6mm flathead bolt. Mounting hardware included.
Compatable with many different brands of ballheads from different manufacturers. Contact Jobu Design directly for specific compatability questions.