Specifications: Size: 1.89inch (48mm) x 0.47inch (12mm). Material: NdFeB Magnets and A3 Steel Plate. Pulling Force: 91/150/180lbs. Colour: Silver. Package Includes: 1 X Round Neodymium Magnet with diameter of 1.89inch and thickness of 0.47 inch. Features: High Quality: The powerful magnetic force is only concentrated at the bottom, The other three sides are Protected by steel cups that almost no magnetic force and magnetic force equivalent to 10 times the volume of the same magnet. force permanent, long service life. Made under ISO 9001 Quality Systems. 60 Days Money Back Guaranteed! Super Powerful Magnetic: Wukong Magnet Diameter 1.89INCH Round Neodymium Magnet has strong magnetic--180 LBS(82KG) for a Direct Touch and Direct Pull Under ideal conditions. This fishing magnet is made up of a super strong neodymium magnet inside of a chrome plated steel cup that concentrates the magnetic force to give this an almost unrivalled 180 lbs of holding power.Absolutely meet your requirements for magnetic force. NOTE: 1.Strong magnets should Keep away from Ironware and some easily magnetized iron products, such as monitors, bank cards, computers, televisions, mobile phones and other 2.Magnets might affect water meter ,electric meter, gas meter and some metering equipment exist some inaccurate affect (Such as : if magnets placed near the meter, the meter will slow down) 3.Please keep away from children and items that may be sensitive to magnetic fields.