Increase the speed of your bow, reduce vibration and silence it, all at the
same time. Spyder Speed Silencers combine an Accelerator Ball center
with soft Spyder Silencer legs. Together they reduce noise and vibration
and increase arrow speed up to 6 feet-per-second. Tough Spyder Silencer material
lasts thousands of shots. Per pair.
I bought these based off of the package info. They made my bow shoot louder & did nothing for speed. After shooting my bow for 2 weeks they began to fray and the spider's legs began to break off. I was told they would ruin my string? Dumped them and bought a set of StringZ silencers, what a difference!!! My bow shoots a 1000 times quieter... for 1/2 the price! Don't make the same mistake I made, save a few bucks and buy something that does what it's supposed to do.
Purchased these and installed them and Wow what a difference in sound. I can't say anything for the speed though. They just made my bow very quiet and thats all I really wanted. Only down fall is the price. Kinda pricey for a few pieces of plastic and neoprene fabric.
After shooting in excess of 700 shots with 2 different bows equiped with these silencers the ends are showing signs of wear by fraying but they are still working for me. I bought an extra pair in case I needed them and have yet to need to change.
Put these on my mathews and it did make bow quite but not really any extra speed. The major down fall is after about 100 shots I started to notice that they were cracking which could be serious. Would not recommend these.