Application: Can be used in magnetic therapy, office, paper clips adsorption, absorption pins, photos & drawings fixed on whiteboard, industrial toys, door absorption, bags, boxes, picture frames, personal interests, and scientific experiments; NdFeB magnetic surface plating layer of protection, there is a certain resistance to the corrosive effects of rust; Strong magnet, please far away your digital products, such as magnetic card, cell phone; Temperature resistant up to 80'C; Diameter: 15mm; Thickness: 1mm.