Ceramic Ring Magnet, 0.66" (18mm) OD, 0.27" (8mm) ID, 3mm thickness - Eisco Labs

Economically priced ring magnet. Outer Diameter of magnet measures 0.66", inner circle diameter 0.27" inner circle diameter. Magnet measures 3mm in thickness. Great for physics experiments or other applications requiring a strong but small magnet. This item could present a choking hazard due to its small size.