3 of D3/4" x 3/16" with 1/8" Hole Countersunk Ring Magnets * 6Kg PULL * Magnet
SizeD3/4" x 3/16" with 1/8" Countersunk Hole. 6Kg (6000g). Usually surprise is an issue--they can jump out of your hands and snap together from a surprising distance before you realize what is happening.