choose a similar size of magnet for the counterpart or a metal plate size 12x12 mm

This magnet has a strength capability of 14 kg

temperature: 482°F

These ring magnets are sold individually

Gummimagnet, Sort 17x12 mm. hyldeforkant choose a similar size ofBlack rubber magnet suitable for magnetic glass boards. Strength: 4. 3 kg. Width: 1. 7 cm. Height: 1. 2 cm. Colour: Black Because this neodymium magnet is rubberised, it can be used outdoors and in wet areas. The magnet might leave a bit of colour on your magnetic board if pressed against the board. But no worries! Stains can easily be removed with a wet cloth. SPECIFICATIONS: Strength: 4. 300 g. Material: NdFeB Magnetism: N45 Max. temperature: 80C