Showerhead holder I designed and printed because all of the showerhead holders at the hardware store didn't fit. They really need to standardize this or something. The mounting holdes are 55mm apart, but the bottom hole is slotted so there's more leeway. Uses 4mm screws. Also, showerheads are heavier than you think. I recommend that you print with higher infill than usual. Uploading in case someone else finds this useful.