The YSL-446G features beautiful rich tone, easy playability, and a balanced response. Its 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 YSL-446G is a medium-large bore model for versatility in almost any playing situation, and features's original wrap for the F-attachment, which is characterized by a surprisingly open, free-blowing response, and by remarkably smooth valve action. Inner Slide Material - Nickel silver Bell Diameter - 214.4mm( 8 1/2"') Bore Size - ML: 13.34mm (0.525") Outer Slide Material - Nickel silver Bell Material - Gold brass

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