Yamaha Intermediate Trombone Mechanical Linkage Small Bore RotorThe YSL-445G features a beautiful rich tone, easy playability, and a balanced response. The bore and bell sizes are the same as professional models, and it boasts a handcrafted assembly which you would normally expect only for a top-of-the-line trombone. The 8-1/2" bell is made of gold brass for a warm, rich sound which can fill a concert hall and the intonation is very accurate. The slide action is smooth and the quick response and comfortable playability is consistent in almost any register, at almost any dynamic. The 445G is a medium-large bore model for versatility in almost any playing situation.The Yamaha YSL-445G Series Trombone features a .525-inch bore with a straight trombone design combined with an 8-1/2-inch seamless gold brass bell for excellent tone and response. The medium-large bore of the YSL-445G makes this intermediate trombone perfect for any musical style. The Yamaha YSL-445G Series Trombone incl