Product name : Alnico magnet, LNG37 Shape:Segment, Disc, Cylinder/Rod, Ring, Countersunk, Segment, Trapezoid, Irregular shapes are available, Customized shapes for Cast Alnico Magnet are also available) Direction of magnetisation : Through the thickness or through the diameter Grade : LNG37 LNG40 LNG4 LNGT40 Tolerance in size : +/-0.05 mm