magnet button 1,type: strong magnet 2,cylinder shape 3,material: magnet + plastic 4,Color transparent red,green,blue,cray. magnet button 1,Item No. magnet O2,type: strong magnet3,cylinder shape4,material: magnet + plastic5,Color transparent red,green,blue,cray.6,packaging:bulk or customized7,GW/NW:8,MEAS.:mm9,ISO9001-2000,UL & BSCI certificated company