This is the baby compression spring for the SPYDER VICTOR, basically a weaker spring that delays the closing of the valve after the hammer had opened it, to allow more gas through, than what the stock spring would allow for. It is thin / slender, so mind to install it carefully upon the EKO pin valve (the tapered end of the spring).
The broader side should ideally slot onto the broader base of the 35mm plenum that we stock, please see the list hereunnder.
 
This is one piece of the combination that we recommend for maximizing the power output of the SPYDER VICTOR.

In tandem w/ this spring, we strongly recommend the following;

• SPYDER ASSAULT SPRING
• SPYDER VICTOR POWER PLENUM (35MM)
• ASSAULT-GRADE SPYDER EKO VALVE PIN

Technical Specifications;