It's amazing how difficult it is to take a photo of the inside edge of a bicycle rim. Especially at night with no natural light to use instead of the flash...

So here's my best attempt at what the rim profile would be like. There is a bump along the edge, but there is no real hook for my nail to catch on as I run my finger over it like there is on my Mavic or my Campagnolo Omega 19 rim.