Ring circular magnets have high resistance to demagnetization, corrosion & oxidation. Our round hole ceramic magnets are the strongest ceramic circular magnets for crafts and DIY you can buy. Strong flat dot magnets don’t lose their power.
Ring ferrite magnets with holes! Practical size - OD: 31mm, ID: 9.5mm, Thickness: 4.75mm ready to be used circle magnets for all your needs. Our Ceramic Hole Magnets Stronger than other Ceramic Donut Magnets!
Size can be customiaed.