There are one or two countersunk holes in the block neodymium pot magnet,which can be used with countersunk head screws,and fixed on the equipment,wall and other places.
The advantage of Alnico magnets is high remanence (up to 1.35T), but it is easy to be magnetized and demagnetized. Do not contact ferromagnetic substances during use
The rubber coated magnet has neodymium magnet inside and the rubber shell is very waterproof and anti-corrosion. Pull force and screw holes can be customized.