A simple, easy way to magnetise and demagnetise tools. For all sizes of screwdriver blade up to 6mm, as well as Hex, Torx, Spline keys and any tool with a shaft size up to 6mm. Great value, compact design, especially useful for magnetising small screws for easier fixing or to turn a standard screwdriver into a pick-up tool. Sold in multiples of 12, ideal for garage, workshop, computer maintenance and DIY use.