●Much Stronger of Neodymium Cup Magnet: 100lb vertical magnetic pull force on base of 1/2(12.7mm) thickness steel plate due to Neodymium Magnet N42. ●Multi-Use of Power Magnet with Male Thread Stud:#1/4"-20 Male thread Stud, directly screw into the threaded hole of the fixed body or putting through a hole and fastening with a nut</b> to attach any hardware assembly. Great for camera , video, display panel , automatic equipment, tools and machines ●Non-Shattering Strong Magnet: The outer steel covering avoid the magnet cracking and chipping ●Good Corrosion-Resistance of Round Magnet: Ni+Cu+Ni Triple Layer good corrosion-resistance coating . Steel shell can avoid the naked magnet from scratching and chipping. Loss of magnetic properties no more than 2% within 10 years ●Package Includes of Magnet: 2pcs Magnet Base +Spring Washer+Flat Washer+Nuts included