QUALITY DESIGN: Each flexible small spring coil is made from #75 zinc plated steel that provides extra durability for the right amount of tension.
CONVENIENCE: Each of the small springs are organized in a plastic storage case in easily identifiable compartments with size chart labeling to specify the spring size.
VERSATILE: Each spring kit includes a wide range of sizes and has 200 pieces for shop and home repairs.
EXTENSION SPRING SIZES: 13/64" x 13/16", 7/32" x 1", 1/4" x 7/8", 5/16" x 1-1/8", 5/16" x 1-1/4", 5/16" x 1-3/4".