The Novoflex Q=Plate QPL-6x6 is a 2.4" round quick release plate for medium format cameras that fits any Arca-type quick release system (except the Arca Swiss Flip-Lock), and includes a choice of two camera mounting screws (one 1/4"-20 & one 3/8"-16) and anti-twist pins.
The bottom edges are dovetailed for smoother loading and unloading from the clamp, as well as less abrasions. The screws of the Novoflex plates work with both traditional flathead screwdrivers as well as 5/32" Allen wrenches.
The Novoflex Arca-type quick release plates are thinner by the slimmest of margins than the Arca-Swiss quick release plates, and thus are not recommended for use in the Arca-Swiss flip-lock quick release clamp if you are shooting with different brands of quick release plates from Arca-Swiss, Wimberley and others.
A finely machined plate for Arca-type quick release clamps.
Q=Plates use the special safety pin of the Q=Base, to prevent the plates from slipping out of the base.