This spring kit includes extension springs and compression springs in 20 different sizes, 200 pieces in total., the types are fully adapted to your different needs

The material of the springs is zinc spring steel, they are durable for long life service.

These o-rings are put in 12 compartment according to different sizes and you can find the size you need easily and quickly, which will help you save time.

With a durable plastic box, compact and light weight, easy to store and carry.

An essential hardware for various repair and maintenance in vehicle, electric appliance, digital devices, etc.