Extension springs are a type of tension springs with hook at the types. The hook are designed as per the application. We manufacture these springs from 0.8 m – 6 mm wire diameter.
Single hook extension spring
Tension spring where only one hook is present on both the sides is known as single hook extension springs.
Double hook extension spring
Tension spring where two hooks are present on both the sides are known as double hook extension springs.Double hook provides extra strength to the spring.