10pc 5kg neodymium countersunk magnet plastic coated d20*5mm waterproof precision machines led panel fixture magnetic mounting base

made up of a super strong neodymium magnets which is capsulated by plastic, it has a special magnetic instruction it's plastic cover can protects the sensitive ferrous surface from scratch like painting ,polished or other sensitive surface. attached to ferrous surface of vehicle, metal shelving and kinds of machines , create a permanent or temporary fixing point avoiding fixing into. the adhesive force of these neodymium magnets have been amplified a lot. waterproof.syi