EATON 980ABD-SP-L 660-Watt, 250-Volt Electrolier Medium Base Single Pole One Circuit Pull Chain Switch, Brass Dipped Aluminum Electrolier medium base single pole one circuit metal shell lamp holder pull chain switch Caps threaded 1/8-Inch 27 I.P.S. and fits standard lamp stems Set screw prevents rotation of socket Available in brass dipped aluminum color Measures 1-2/5-Inch diameter by 1-1/4-Inch height