Magnetpro Multipurpose Switch Magnet, Lifting Magnet with 660 LB Pulling Force, On/Off Magnet for Lifting, Machining & Welding Positioning, Liquid Filtration, Automation, Metal Separation. 【Strong Magnets】Rated pull-off force 662 lbs. Rated safty lifting weight 220 lbs. 【!Note!】The steel thickness of the adsorption object has a great impact on the actual suction of this product. Please note the curve on the left side and buy carefully. If the steel is thin or has a large surface, please buy several magnets in combination. 【ON/OFF Switch】Two gears: "ON" gear, "OFF" gear. Press down before rotating. All components are made of metal. Handle and cover made of aluminum, shaft made of SUS304, base made of low-carbon steel. 【Multipurpose】 This switching magnet can be used in manufacturing, woodworking, welding, car repair, robotics, automation, magnetic fishing, frame fences, mounting devices, cutting and gluing devices, blade guards, work supports, frames, installation of cabinets or anything that makes up your projects faster, safer and easier. 【Safe and Easy to Use】 Magnetpro magnets are completely non-magnetic when "OFF". Adsorbed metal and even dirt fall off automatically. Safe and easy to unload metal You will not cut your fingers when you remove steel chips and dirt.