The NEW 2" wide Arca compatible, anodized aluminum round mounting plate/riser - 3/8”-16 female w/ 1/4”-20 stainless steel bolt. Male to 3/8”-16 female adapter with circular bubble level has completely changed the way photographers work with ball heads. And now, in an economically priced three-pack you can have one on multiple cameras.
"No more annoying d-rings with the Platypod disc. I have four of them, one on each camera I like to shoot with plus one for my phone with the Square Jellyfish phone holder. I rarely even take them off." Skip Cohen