Keen Amateur
DO NOT BUY
Pros: It does increase projection (barley)
Cons: Snapped the windings on my g string and pushed winding on my d string down so the core is exposed . It destroyed my strings and now I need replacements
Other: Only put on a and e string as it is too small for g string and d string. U can put the string on the protecter but when it is tuning it will hold the winding down, separating the winding and strings . hence increasing snap chance and affecting sound quality. (Even though I put graphite as lube it still happened. )