Product Name: D15X4 mm Grade Ring Neodymium Magnets China with Hole M4 Model NO.: D150404 Grade: N35~N52 Coating: Nicuni Shape: Countersunk Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Motor Magnet Composite: Rare Earth Magnet MOQ: 500 PCS Type: Permanent Magnetization Direction: Thickness Direction Magnetization Working Temperaturuer: Within 80'c Products Name: Countersunk Magnet Trademark: Xionglue Transport Package: Carton Specification: Custom Origin: Guangdong, China HS Code: 85051110 Product Description D15x4 mm grade ring neodymium magnets china with hole M4Product nameNeodymium magnetMagnet sizeD15x4 mm with hole M4MaterialNdfebMOQ500PCSSingle pieceweight4.93 gGaussabout 2,056 GsPullabout 3.34 kgTypepermanentMagnetization DirectionThickness Direction MagnetizationWorking TemperaturuerWithin 80'CSurface coatingNiCuNiGradeN35~N52NotesStrong magnet,Be careful when use. Please be care when break apart because Neodymium block magnet have strong MagnetismApplication: Acousticfield:thespeaker,receiver,microphone,alarm,stageaudio,caraudioandsoon. Electronics:permanentmagneticactuatorvacuumcircuitbreakers,magneticrelays,meter,soundmeter,areedswitch,sensors. Electricalfield:VCM,CD/DVD-ROM,generators,motors,servomotors,micro-motors,vibrationmotors. Machineryandequipment:magneticseparation,magnetic crane,magneticmachinery ect.Healthcare:MRIscanners,medicalequipment,magnetichealthproductsandsoon. Otherindustries:magnetizedWax,pipedescaling,magneticfixture,automaticmahjongmachine,magnetic locks,doorsforwindowsmagnetic ect.1. How long will you give me the reply?We will reply you in 24 hours.2. How is the price?As we believe the quality is the most important, we will provide thehigh quality goods with reasonable price.3. Could I get samples?Yes, we have materials in stock to help you toget the samplesas soon as we can.4. How long will you deliver sample and bulk order?If we have materials in our stock, we can send them within 3 days. If we don't have material in stock, production time for sample is 5-10 days, 15-25 days for bulk order.5. How to pay you?T/T, Western Union.