These types of screwdrivers feature a triangular idea to allow to be used on screw heads with triangle-shaped depressions. These screw heads are typical in appliances, electronics, and toys. The Lox recess screw head is usually a design of four overlapping squares which might be recessed in the screw head. https://typesofgeodesicdome15925.blog-kids.com/29539173/not-known-factual-statements-about-types-of-screwdriver-heads