Magswitch on/off magnetic MagJig150 with 150lb/67kg of vertical holding force. MagJigs are the Ultimate Workholding Clamp. Nothing else like it – ever! Incredible hold force in a simple 180° turn! Unmatched speed strength and precision in clamping Magswitch MagJig Magnetic Clamps have REVO utionized table top workholding in woodworking and industrial fixtures. Features fast strong set up anywhere on a steel or cast iron table or fence. Not limited by the miter slot or table edge. Use in your custom jigs and fixtures by drilling a hole using a 40mm Forstner bit (sold separately) into ¾” thick material. Drill as many holes as you want for as much strength and flexibility as you need by simply dropping in more MagJigs. Featuring the patented Magswitch® technology for complete on/off control super strong precise positioning.