Square Bi-Directional Screw

myminifactory

People generally assume that most screws are inserted into a surface by turning them to the right, which is referred to as clockwise. This particular screw breaks that assumption because it can be screwed in either direction - both clockwise and counterclockwise. Most people would say that the majority of screws have a round shape, but this one has a square shape. It's clear that this screw doesn't conform to standard expectations.