Grundorf Heavy Duty 4/4 Tuba Case. Wedge shaped case. Heavy duty wheels allows for comfortable, balanced transport. Has a velcro strap to hold the tuba in place, and it also has a small compartment on the inside for mouthpiece, valve oil, etc.
The 186 will fit the Miraphone 186-4U or similar sized tubas up to 40" tall and up to an 18" bell. The 202/203 was designed specifically for the St Petersburg 202N/203N, but other tubas of similar size will also fit - up to 37" tall and up to a 17.75" bell.