Eclipse N854N Adhesive Backed Disc (Pk 50)

Amazon

Self adhesive magnet - easy application for magnetic closures and fittings 3M 486 high quality adhesive backing for best adhesion Excellent holding capacity relative to size Quick release tab for fast and effective liner removal strong permanent connection between on smooth non-magnetic surfaces such as wood, walls, metal and plastic

Zoro Tools

Material grade N42. Nickel plated coating. 3M 468 Adhesive with quick release tab. Polarity - North, has adhesive on the South Pole. South, has adhesive on the North Pole.