Compatible with Canon RF 600mm f/11 IS STM & RF 800mm f/11 IS STM. RF 800mm F11 IS STM. RF 600mm F11 IS STM. Compatible with Canon Lens With Arca standard fit, cross slot design, compatible with ARCA-SWISS, KIRK, Wimberley, MARKINS, SUNWAYFOTO, kangrinpoche, BENRO, SIRUI quick release plate and ball head of Arca fit; can be used with iShoot panning head IS-QJ64II and quick release plate QS-60/QS-70/QS-80.
eBay