5mm x 5mm x 5mm N52 neodymium cube magnets 3/16in x 3/16in x 3/16in 5x5x5mm
THE STRONGEST AVAILABLE on Amazon 600 LBS/270 KG Pull Force Real Highest N52 Grade Neodymium Magnet Pro 1.35x1.35x2.35 in. (35x35x60mm). Experimental Industrial Grade …: Amazon.com: Industrial & Scientific