Mini 2 in 1 Magnetizer Demagnetizer Screwdriver For Steel Screwdriver Blades Tweezers Hand Tools Magnetizing Device JM-X2 Specifications: Magnetize or demagnetize metal tools and small parts immediately (Suitable for 2mm to 4mm length metal parts) Internal with powerful C8 industry Ceramic magnets Package Contents: Magnetizer Demagnetizer Screwdriver