I made this to be a low profile way of mounting a bike frame to a wall using command strips.  it works without the bottom bracket pin in the accessory file, it's more of a just in case piece or if you have a heavier frame you wish to hang.  It works with 26.5 inner diameter seat tubes, the block in the accessory file is just a spacing block that you glue onto the mount to space the frame from the wall, it is likely that you will have to measure and print a block of a custom size to correctly space your frame from the wall.  The reverse collet is superglued to the curve to flat adapter.  The reverse collet should be slid all the way down into the seat tube and the pin should be banged in firmly.  It prints with no supports, a small brim is not a bad idea though a skirt will do just fine, I would recommend at least 25% infill.