M12 Construction Bolt and Nut

M12 size cap head bolt and nut, with cap head screwdriver profile for 6-sided construction toy screwdriver and 20mm toy wrench Uses standard M12 thread profile with the nut slightly expanded to make assembly easier, and eased end on the bolt and both sides of the nut. Has 40% infill to ensure the bolt is relatively strong. Prints well in PLA at the profile .16 layer height. No supports required.