Size: 27mm (Outer Diameter) x 10mm (Thickness) with a 6mm (Inner Diameter) hole. This is a large, thick ring magnet for substantial force.

Material: High-grade Neodymium Iron Boron (NdFeB) – a powerful rare earth alloy, typically Nickel-coated for protection.

Use: Excellent for heavy-duty sensor applications, magnetic couplings, motor components, specialized holding systems, and demanding DIY projects where significant force and a central pass-through are required.