Standard strong magnet to hold badges on coat or on metal wall.
Badge magnet (pins, name badge, or card holder... etc) with ir

or glued with an iron plate which is attractive to a strong magnet piece 
SM10/10A is set of 17 mm dia. round shape.
SM11/11A is set of 45 x 13 mm rectangular shape.
SM12/12P is set of 45 x 13 mm rectangular shape with black plastic base.
SM15/15P is set of 33.2 x 12.1 mm rectangular shape with black plastic base.

Welcome your inquiry. Tell us interested quantity, model number or size... etc.

Weighty pins or name badge, or heavier card holder wearing on a thick coat may
need a female piece of strong magnet glued on backside so that it could be held
frimly with the other piece of strong magnet inside of the coat.
More sizes more models of strong magnet pieces are available.

with a sketch or image or your ideas...etc. so we can quote promptly.