Neodymium Rare Earth Magnet block - 30mm x 11.5mm x 3.3mm
Geostuff.com.au
$9.50
This rectangular block magnet has a length of 30mm, a width of 11.5mm and a height of 3.3mm. It has a magnetic flux of 2247 Gauss and a 4.6Kg pull force against 5mm mild steel. Grade N38
This would be suitable for a medium to large systema