Fast shoe measures 1 5/16" x 1 5/16" in a narrower upper (damn, I'm American!...but because I Not sure either and want you to like it, I made the conversion for you - it's 1.3337". The shoe on display measures 1 5/8" x 1 5/8" (4.1275 x 4.1275 cm) My tripod Petra hole 1 5/8" x 1 5/8" (4.1275 x 4 .1275 cm) at the top. The great thing about this little shoe is that you can adjust it with tape or duct tape (regular or fancy!) to get the perfect fit, so I added a few layers of the above tape (very carefully, no wrinkles, um the edges like OCD). While it's true that this shoe doesn't come with a nice cork insert, as in the photo, it does have a slightly softer "spongy" filling if that matters to anyone (and I'm not sure why that is, but here it is).
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