Tripod quick release plate for Sigma 70200 OS
this response is with the assumption that you already have a tripod head that supports arca-swiss compatible plates/clamps ... i don't know of any manfrotto or other brand-specific plates that i'd recommend ...
a manufacturers compatibility chart is located here:
consider a plate with a metal lip to prevent the lens from spinning off the plate. since your lens is moderately heavy, it may spin off the plate no matter how tight you screw the pin. that's where metal lips help ... plenty of plate manufacturers ... reallyrightstuff, kirk, sunwayphoto ... from really expensive to really inexpensive ...
hope this helps ...