Master Models' 1/350 USN 8"/55 (20.3cm) barrel set contains 9 individual barrels. These barrels have the correct dimensions for four different marks of barrels; 10, 11, 13 and 14. These guns were used on the following classes;

• Lexington Class aircraft carriers (prior to 1942)
• Pensacola Class cruisers
• Northhampton Class cruisers
• Portland Class cruisers
• The first three ships of the New Orleans class; New Orleans (CA-32), Astoria (CA-34), Minneapolis (CA-36) [Minneapolis was regunned with Mark 15's in 1944]

Master has previously released set of Mark 12/15 barrels as SM-350-025, used in the Tuscaloosa, Wichita, Baltimore and Oregon City classes.