Through-Glass Shower Door Knob M5
A replacement shower door knob, 40 mm across and 35 mm tall. Print two and join them through the glass with a length of M5 threaded rod. Each knob has an M5 hex nut pocket (8.3 mm across flats), a 22 mm deep M5 clearance bore and a 25 mm × 2.2 mm recess on the glass face for a rubber washer. It fits 6–10 mm glass with any hole of 6 mm or larger, so you can replace a cracked plastic knob without tracking down the original part.
bathroom shower-door knob m5