The bridge that you use plays a major factor when determining the sound, tone and playing performance of any electric guitar. For that simple reason, Graph Tech only uses the highest quality alloys for all of the bridge assemblies and the accompanying saddles that we produce. With the alloys we use, you will find that Graph Tech bridges produce a brilliant tone and harmonic content. Most other bridges that you will find on the market today are made from Zinc which is commonly known as "pot metal". Pot metal is used to make fast, inexpensive castings. Pot metal can be prone to instability over time, as it has a tendency to bend, distort, crack, shatter, and pit with age. You will find a lot of guitar manufactures use these bridges to help reduce their costs leaving tons of room to improve your guitar by upgrading this simple component.