This Heavy Duty Extension Spring is designed for industrial use and is made of high-quality materials. The springs come in a set of two pieces and are made with 0.25" wire, 1.29" OD, and 15" L. The mandrel is made of mild steel and the thread size is #15. These springs are perfect for fastening and extension applications. The brand is not specified in the item, but it is made in India.


Lot of 2 New 0.250" Wire x 1.29" OD x 15" L 

inch Extension Springs 

Wire - 0.250”  Chrome silicon wire / natural finish

Spring Outer Diameter - 1.29”

Spring inside hook to hook length - 14.50”

Spring Overall Length - 15”

Full loops

105# Rate/ 56# Tension