EFHU flexible hangers meet NEC sec 501 requirement for flexible suspension where fixture stem is more than 12 in long|Cushion design protects against vibration and swivel action (any direction up to 15 deg from vertical) protects fixture if accidentally struck|Ground joint mating surfaces assure flame-tight fit|Hanger has set screw in stem hub to prevent fixture stem from turning|3/4 in fixture stem|Smooth, rounded integral bushing in each hub to protect conductor insulation|Chromate/epoxy powder coated/zinc electroplated finish