[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.