The listing is for one handmade Exart Pinhole 45 camera. I made this camera myself from wood. Camera is delivered with pinhole plates by size 0.3mm. With Pinhole lens board you can use any 49 mm filter. Focal length is 100 mm, f-number 333 and angle of view is ~ 75 degrees.
Camera has no shutter. Pinhole photography need very long exposure times, you just use the lens cap. Attention for long exposure times should be aware of the Schwarzschild effect (reciprocity law failure)!