M Bore .453′ = 11.51 mm;Yellow brass bell Ø 4 7/8» = 124 mm;Gold brass leadpipe;Nickel silver outer slides;Stainless steel pistons;Thumb hook on 1st valve slide;Adjustable finger ring on 3rd valve slide;2 water keys;Original VINCENT BACH 7C mouthpiece and valve oil;Clear lacquer finish;Light weight case with rucksack assembly;