I bought this to fit to my Harley Benton 35+. It took me about fifteen minutes to take off the existing hardware and fit the new tremolo and roller bridge this being bought separately. I restrung tuned up, stretched in the strings and it all worked fantastic. I have no tuning issues with the system. The tremelo travel is adequate for the style of music I play. It's not designed for dive bombing, though it is very well designed and engineered. Comes with metric and imperial threaded bolts plus inserts if needed. I used the existing inserts on my guitar. The retro looks just adds class and it works brilliantly. Great product, I highly recommend this super smooth action tremelo system.