The ResoMax Harmonic Bridge System is made from our lightweight alloy designed to have your guitar bursting with harmonics. It's exclusive AutoLock feature secures the brides and tailpieces to your guitar, with or without strings magnetically with no tools to use or lose. All ResoMax bridges are triple plated for years of durability and good looks. This lightweight, high strength tailpiece will increase harmonic content and leave your guitar dripping with tone. This is a great option to upgrade or replace the existing tailpiece and electric guitar that currently has a standard tune-o-matic bridge and tailpiece combo.