1.Shape:disc magnet 2.Size:diameter 5-50mm, thickness 1-35mm 3.Grade: N33-N50, 35M-48M, 30H-45H, 30SH-42SH 4 ... .Various coating Half Disc/round magnet:1. Disc magnet has ... very good.2. Working tempt:80 degree to 200 degree.3. Used field: mobile phone, electric motor, automotive engines, automatise mahjong ...