The MN400 from FLAIR Security is a donut type Rare Earth Magnet 0.400 x 1/8 Inch Thich With Screw Hole.
The VIP130-2C from Flair Electronics is a Flair Surface Mount Magnet Only with White color.
The VIP94-2C from Flair Electronics is a Recessed 3/8 Inch Stubby Magnet Only with White color.