Instruct: Classify a review into positive or negative sentiment.
Query: rusts nickel strings

where my strings go under the guide it causes the strings to oxidize. I haven't tried stainless steel strings but I imagine they would fare better.In addition, I recently installed a Kahler 7410 tremolo on the bass I was using this on, and it causes the strings to go sharp whenever I dive them. I've ordered a roller tree to replace this one. if you're not after the original Fender look, save your money, order once.