M8 Thumb Screw. Remix from: https://www.printables.com/model/11205-m8-knob. Original didn't fit my bolt when printed with Bambu P1S, so changed the measurements a bit.
Outer diameter 40mm, hole is 6mm deep, 16,8mm from side of the hexagon to other side.
The author remixed this model.
Original didn't fit my bolt when printed with Bambu P1S, so changed the measurements a bit to 16,8mm from side of the hexagon to other side.