Deskripsi Screwdriver is an innovation from a screwdriver plus or a minus screwdriver that already exists. From the problems that often arise when using a screwdriver plus and a screwdriver minus with hand power finally screwdriver ketok made for mempringan work. A kettle screwdriver is a special tool specially designed to open a hard bolt, using a screwdriver bolt – a hard bolt like the one on the engine block or also on the colter can be opened easily. As the name suggests, a working screwdriver works with the buzzing or pounding that occurs on the tip of the screwdriver. The beat can be done using a hammer. Eyes screwdriver knock 3 x 80 mm
