The idea with the tri-wing drivers resembles that of some pinwheels and is applied to function on screws which have triangular sockets with 3 wing measurements. For the reason that these screws have these types of different slots, it can be difficult to remove them without having a tri-wing driver. https://elliottoppmj.activoblog.com/29886105/a-secret-weapon-for-types-of-screw-heads-square