A screwdriver magnetizer / demagnetizer

Easily magnetize and demagnetize your screwdriver. This is designed for 10mm X 10mm X 2mm magnets (actual size of magnets is 9.7x9.7x1.7). Install the magnets with the same poles facing into the center of the opening as shown in the renderings. The inside hole is used to magnetize, while the top outside area demagnetizes. V2 and V3, both of which have increasingly stronger magnetic fields, due to their magnets being closer together. V2 has a 7mm x 15mm opening, while V3 has a smaller 5mm x 15mm opening. Out of the three versions, I recommend that you pick the one which most closely fits your screwdriver's shaft.