Earth-Chain Enterprise Co. Ltd has been a premier international manufacturer of magnetic tools since 1988. Earth-Chain's award-winning "Electro-Permanent Magnetic Chuck Connection" offers durable and maintenance-free use, with high holding power that works for both thick and thin materials. Earth-Chain deburring machines also offer great options for CNC swiss-type screw machines that works perfectly with aluminum, brass, copper, stainless and titanium.