ML bore .460" = 11,68 mm Yellow brass bell: Ø 4 13/16" (122,24 mm) Bell rim with wire Gold brass leadpipe, nickel silver receiver Thumb hook on 1st valve slide Finger ring on 3rd valve slide Stainless steel pistons 2 water keys VINCENT BACH 7C mouthpiece and valve oil Light weight case with rucksack assembly Silver plated finish TR501S