... easy to machine, compared to Alnico and SmCo magnets.c.NdFeB Magnets are with high resistance to demagnetization. 2. ... Ring, Block, Segment, Cylinder, Trapezoid, Customized Design(Design proper magnets for clients specific requirements) 4.Tolerance of permanent Neodymium NdFeB ... 00mm50.00mmMinimum1.00mm0.60mm0.50mm Segment, Arc and other irregular shapes can be made according to customer's sample ...