TOP GUIDELINES OF KINDS OF SCREW HEADS

Yankee Screwdriver: As opposed to employing ball bearings, this screwdriver uses a spring-loaded mechanism. As an alternative to twisting the screw with the wrist, you place the screw head towards the screw and press it to tighten.A philips generate screw head needs a phillips screwdriver or bit to tighten or loosen. They aspect a specific pattern