These heavyweigh bottom valve caps are designed to add mass in the valve block. They are designed to fit the King 1240, 1241, and 2341 tubas.
Top & Bottom Caps
King Tuba BbBb 4 Valve H.N. White Era
King 2341 4 Valve BBb Tuba with Case Gold Lacquer
King USA 2341 BBb 4 Valve Tuba Made c.1999-Satin Silver-Great
Selling a gently used King 2341W Series 4-Valve 4/4 BBb Tuba Gold Lacquer With Hard Rolling Case. Two minor dents shown in photos but everything else
King 2341 4 Valve BBb Tuba with Case Gold Lacquer
King 2341 BBb Four Valve Full Size Concert Tuba
Tuba Parts – John Packer US International
King Model 2341 4 Valve Tuba w/ OHSC, Serviced & Play
King Tuba BbBb 4 Valve H.N. White Era
J.W. Pepper and Son, Standard, E flat helicon, 3 piston, ca.1914
4/4-size Tuba with 0.687 Bore, Yellow Brass Body, 20 Upright Bell, 4 Front-action Pistons, Mouthpiece, and Case
King 2341W Intermediate 4-valve BBb Tuba - Silver-plated with Case
King Tuba BbBb 4 Valve H.N. White Era
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King BBb 4 Valve Bell Up Piston Tuba Serial #116847