200PCS Metal Steel Spring Electrical Hardware Spring Set Drum Extension Tension Springs Pressure Assortment Kit
[MATERIAL]: Flexible spring coils made of #75 galvanized steel are strong and flexible to withstand proper tension.
[COMPRESSION MODEL]: 9/32" x 1/2", 1/4" x 13/32", 7/32" x 11/16", 3/8" x 5/8", 3/8" x 3/4", 9/32" x 3/4", 23/64" x 1-3/8", 7/32" x 1-1/2".
[EXTENSION MODEL]: 13/64" x 13/16", 7/32" x 1", 1/4" x 7/8", 5/16" x 1-1/4", 5/16" x 1-3/4", 11/32" x 1- 7/16", 9/32" x 2", 5/32"x 3-1/8", 3/16" x 1-3/4", 9/32" x 1-1/2", 11/32" x 1- 27/32", 5/16"x 1-1/8".
[PLASTIC STORAGE BOX]: Equipped with a storage box, the springs of different sizes can be separated and placed orderly.
[APPLICATION]: Used in car engines, medical equipment, electronic equipment, and measuring instruments.