High Quality Spring Steel for Long Service Life. Corrosion-Resistant Zinc-Plated Finish. 20 Common Sizes in Compression and Extension Styles. Compression Springs: 10-pc. 7/32" x 11/16". 10-pc. 7/32" x 1-1/2". 10-pc. 1/4" x 13/32" . 10-pc. 9/32" x 1/2" . 10-pc. 9/32" x 3/4". 8-pc. 23/64" x 1-3/8". 6-pc. 3/8" x 5/8". 12-pc. 3/8" x 3/4". Extension Springs: 12-pc. 5/32" x 3-1/8". 10-pc. 13/64" x 13/16". 8-pc. 3/16" x 1-3/4". 10-pc. 7/32" x 1". 10-pc. 1/4" x 7/8". 10-pc. 9/32" x 1-1/ 2". 12-pc. 9/32" x 2". 8-pc. 5/16" x 1-1/8". 10-pc. 5/16" x 1-1/4". 12-pc. 5/16" x 1- 3/4". 10-pc. 11/32" x 1-7/16". 12-pc. 11/32" x 1- 27/32".