Do not under estimate the power of this large cube magnet. With a holding capacity of up to 70 lbs, this magnet is definitely not for the un-initiated. This one creates a very deep magnetic field that is perfect for detecting metal studs in the wall, building particle accelerators, or very large halbach arrays for your maglev train. Magnets this large can be dangerous and should always be handled with thick leather gloves. This magnet is very difficult to control and easy to break. It is not recommended for day to day handling and experimentation. The B2525 can hold up to 70 lbs.