This tailpiece makes tuning steel cored strings so much easier. If you "running" helicores on a fractional instrument you have to have some way to fine tune. It's either this or 4 individual tuners. This is so much cleaner. If you take your time you should be able to change it out yourself but if your all thumbs then take it to your local violin shop. It's a quality product, very light weight and works smoothly. Highly recommend.. This tail piece was super easy and now I have fine tuners! Thank you for an awesome product.This tail piece is really small considering the size of a standard wooden tailpiece. Hope the tuners hold up, as that seems to be a problem. The service was excellent. I recommend this, because students need fine tuners, heck, so do solo violinist, very quick and handy to tune. One of the positive things about the composite tail is that they vibrate and will help with the over all vibrations of the violin...