Alex 5 Genius, it uses magnetic and three hangs to hold the screw.Well build with stainless steel.Came with a PH2 bit.The only problem is only for 5mm to 8mm screw head.I wish could remove the hangs for eventually repairs or try to use as regular magnetic screw catch, looks like have a holder threaded on the bottom, I tried here, but can't remove it, maybe I need try harder, but I'm afraid to bend the hangs.Any way, it's a good product.