Amazon.com: Extremely Strong Neodymium Cup Magnets
SUPER EASY MOUNTING: COUNTERSUNK HOLE for easy use with #10 SCREW! This allows the screw head to sit below or flush with the magnets surface. The counter sunk hole on the magnet works with flat head screw to affix onto walls or cabinets NI+CU+NI TRIPLE LAYER PLATED, THE BEST COATING AVAILABLE. Tight tolerance +/-0.002'.
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