Ferrite Ring Magnet 4.33In Dia Large Ceramic Ring Magnet with Hole for Science Experiment, Speaker, DIY Projects - Heavy Duty Round Extra Big Magnets

Ferrite Ring Magnet 4.33In Dia Large Ceramic Ring Magnet with Hole for Science Experiment, Speaker, DIY Projects - Heavy Duty Round Extra Big Magnets

Dimension: Outer Diameter: 110mm (4.33 Inch) | Inner Hole: 60mm (2.36 Inch) | Thickness: 15mm, perfect for projects requiring ‌extra large round magnets‌ (4" size) Made of ‌ISO9001:2008 certified ceramic magnets‌, grade C8 for durability. Tolerance: ±0.05mm, ideal for ‌speakers, science experiments, and industrial use‌. Works as ‌speaker magnets‌, motor parts, magnetic levitation experiments, and craft projects. Fits ‌big ring magnets with hole‌ requirements in educational/engineering fields. Ceramic magnet large‌ size maintains strong holding force without corrosion. Includes ‌1pc ring hard magnet‌. Compact but heavy-duty for ‌round extra large magnet‌ applications. 100% Brand New by Burnur.