Prime-Line 250 lbs. Diecast, Gold Torsion Spring, Right Hand

This heavy-duty (10,000 cycles) extension springs have double loop ends for extra durability. There are 5 sizes that will replace most all spring configurations on residential doors that are no higher than 7 ft. tall. Each has a 1/8 in. galvanized carbon steel aircraft cable, installed through springs to prevent injury in case of breaking.