MagVise magnetic blocks securely hold workpieces for machining five sides or through the piece. Each block is rated up to 4,620 lb of magnetic force. A 3.5x safety factor yields over 16,000 lb of magnetic force. Permanent magnet power means no electricity or maintenance. Activation requires only a simple turn of a wrench. MagVise provides fast setup, machinable soft jaws, and the ability to be ganged for custom solutions. Earth-Chain Inc., Indianapolis, IN• L x W x H - 9.2" x 5.2" x 5.3" • Min. Workpiece Thickness - 0.8" • Max. Force - 4,620 lbs.