DescriptionIt is mainly made up of a high grade neodymium magnet and a steel shell, the steel shell is crucial to amplification of magnetic force, it can concentrate the powerful magnetic field on the bottom of magnet which increase the magnetic force by 2.5-4 times compared to the naked magnet. At the same time, the steel cup can prevent the naked magnet from scratch and chipping during grabbing and clamping.Feature- Color: Silver - Material: Neodymium Magnet. - Size: 6x6x6.6cm - It is mainly used for tool droppers & Treasure hunters or lifting, hanging, or anywhere you need an incredibly strong magnet. - Designed for heavy duty and underwater use, it can recover lost equipment, tools, ancient ferrous object and others in deep water, wells, holes, also great for lifting, hanging applications.- Neodymium magnets keep their strong magnetic properties for decades under conditions. - for all magnet fishing, lifting, hanging, and retrieving applications!Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!