Custom Legends “Eldreth” Trumpet Mouthpiece Top - Lead/Screamer - Free Shipping! This is a raw brass custom lead piece similar to the stock Legends “Shooperman” top. The inner diameter is 0.587”. The cup depth is F. The threads are the same as Warburton. The cup on this one is also slightly deeper than my other listing of the “J Eldreth” top.