: for magnetizing / demagnetizing, with strong stripes for against two Anti slip grooves design: easy loading and unloading to sweat and slipping Upgrades your toolkits with Tools Bit Magnetizer and Demagnetizer – the accessory for magnetization and demagnetization of your Bit Whether you ' re working on electronics, furniture assembly, or automotive repairs, this magnetizer provide a solution for handling driver Bit coils: Strong magnetization and fast demagnetization, can be magnetized by passing through the coils, and demagnetized by rubbing against, Manufacturer: Oxxggkao