1,H1/4" Driver Nut Setters Non Magnetic(nut setters,power bits,screwdriver bits) 2,use high grade steel material. Product name:H1/4” nut setters Non magneticApplication:Air screwdriverMaterial:import high grade steel for industrialFinish:sand blasting,electroplated(Titanium,chrome,nickle),black, maroon High Quality magnetic nut setters