• One of the most useful tool 'gadgets' we've ever used!
• Insert and rotate tool-tip or small part in square slot to instantly magnetize
• Rounded slot demagnetizes; works over-and-over on same tool or part
• Turn any screwdriver into magnetic retriever; demagnetize electronics tools
• Permanent positive and negative magnets in impact resistant ABS body; no batteries or moving parts

We know there's a perfectly rational, scientific explanation to how this tool does what it does--but it seems a little like magic! REALLY handy when working with small screws nuts that you want/don't want magnetized. Magnetize your screwdriver tips to hold fasteners in place works on any ferrous metal object. Lifetime warranty and Jack's Tool Shed worry-free Satisfaction Guarantee.