Neodymium Ring Magnet - 70mm x 14mm x 3mmMagnetic Product Description: This Rare Earth Ring Magnet has an outside diameter of 70mm, an inside diameter of 14mm and a thickness of 3mm. It is identified by the AMF magnet part number 23001A. Uses for our Rare Earth Ring Magnets: This Neodymium Ring displays a wide magnetic surface area (70mm) and a thin height profile (3mm). These dimensions are associated with specialised equipment such as sound recording and communications devices and also