20mm x 4mm with Countersunk Hole M5mm N35 Strong Disc Neodymium Countersunk Ring Magnets

This product measures 20mm in diameter and 4mm in thickness and features a #5 countersink through the thickness of the magnet. It is made of a grade N42 neodymium, iron, and boron magnetic alloy blend. They are plated in a nickel-copper-nickel coating for a shiny corrosion resistant finish. Neodymium ring magnets are perfect for use as magnetic fasteners around the home or for use in commercial applications.

Please note that all neodymium rare earth magnets are fragile and require caution when installing to prevent shattering the magnet, and when handling due to their brittle nature and to avoid injury due to pinching.

Material: Sintered NdFeB. Grade N35
Pole Orientation: Axially magnetized, the poles are on the flat surfaces.
Coating: Ni+Cu+Ni triple layer plated, the best coating available.
Tolerance: The tolerances of all the dimensions are +/-0.004in with coating.

PLEASE NOTE:
All magnets may chip and shatter, but if used correctly can last a lifetime.
Keep away from pacemakers.
Not for children, parental supervision required.
COMMERCIAL USE ONLY.
If damaged please dispose of completely. Shards are still magnetized and if swallowed can inflict serious damage if magnets join inside the digestive tract.