Description

a screwdriver with a ratchet (so the blade turns in only one direction) and a spiral in the handle (so the blade rotates) with downward pressure on the handle. Type of: hand tool. a tool used with workers' hands. A "slotted flat blade screwdriver" is a long standard hand-tool dating back to the 1500s. It has a flat bladed tip used to turn, fasten or loosen screws and bolts. The flat blade screwdriver is an extremely versatile tool and is used for fasteners of all sizes, providing significant leverage. The most expensive part of the screwdriver is the handle. The ends are usually universally coloured so you can quickly identify which screwdriver size you are working with. All the top brands use the same colour coding system: Green - 200 Grey - 140 Red - 120 Black - 100 Yellow - 80 White - 60 The number next to the colour refer to the blade width in millimeters