Diameter 4 mm height 2 & nbsp; mm tolerance ± 0.1 mm condition new material neodymium-iron-boron (NdFeB) adhesive force (max.) 0,42 kg coating nickel-plated magnetization axially magnetized & nbsp; Disc magnets are one of the most popular forms of neodymium magnets. This creative all-rounder creates reliable connections where there is no space for mechanical fasteners and is suitable for fastening objects. Magnetic disks made of neodymium have become an indispensable part of the toolbox of craftsmen, photographers and electricians, as these magnets are ideal for fixing, holding and positioning. The area of application extends in the household to model making and magic tricks up to normal refrigerator - or pin board magnets!