Conn 34H Alto tromboneThe C. G. Conn model 34H Eb alto trombone features a 7" yellow brass bell designed for excellent resonance and projection. The . 491" . 500' dual bore handslide design provides an ease of response and open feel. The clear lacquer finish provides a subtle warmth to the overall sound. The C. G. Conn model 34H alto trombone is designed for the player looking for a high performance alto trombone with slide positions in the same relative positions as a