Prime-Line GD 12191 Extension Spring, 1-19/64 in OD, 25 in OAL, Carbon Steel, Galvanized, Loop End, 110 lb

Heavy-duty (10, 000 cycles) extension springs have double loop ends for extra durability. 5 sizes will replace most all spring configurations on residential doors that are no higher than 7 ft. 1/8 in galvanized carbon steel aircraft cable.