Fits all single and double valve bass trombones with bells up to 10.5 inches in diameter. Fits any wrap or valve combination. Cronkhite's bass trombone bags feature an additional arc that provides extra room for your horn's 2nd valve paddle. This keepsthe valve mechanism from bending or binding while in the bag. This bag is hand made to order in the United States. Please allow approximately three weeks for the bag to be made and shipped to you. Oversize item—does not ship USA Flatrate.