Description Check out AEC Magnetics' DCS-400M-110C Heavy Duty Round 110-Volt DC electromagnet. It offers 800 pounds of holding, lifting and positioning power in a 7.0 pound magnet. The magnet is 4.0 inches in diameter, 1.25 inches in height and 5/16-18 threads on 1.0 inch centers. The cord for this magnet is our M-style cord. We have other cord outlet configurations, holding power and size configurations, just ask if you need a different set up for your magnet. This magnet is best for smooth-surfaced ferrous materials. Our electromagnets are hand-built to last, and each one is tested before it leaves our facility. (800) 535-3954.