Tuba in the key of BBb. 17,5 - 18,5mm bore. Bell Ø 366mm. Yellow brass body. Gold brass leadpipe. Nickel silver outer slides. 4 front action valves. Stainless steel pistons. Removable valve section. Adjustable thumb rest. Lacquered finish. Gig bag with rucksack assembly. Weight approx. 7,0 kg.