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The JP133MLR Bb/F Is John Packer's medium large bore tenor trombone perfect for school ensembles, training bands and for those players who require a reliable Bb/F trombone but can't justify the cost of a more expensive instrument. 


John Packer's have equipped the JP133MLR with a rose brass bell giving it a fullness and maturity in tone that is usually not found at this level. The JP133MLR also features a durable string rotor mechanism ensuring the development of players is supported as much as possible. The JP133MLR Bb/F large bore tenor trombone boasts an 8" bell and a small shank bore measuring .525". A bell ring providing a robust structure and a rose brass bell ensuring a full, dark sound.


  • Model: JP133MLR
  • Key: Bb/F
  • Bell Size: Rose Brass 203mm (8")
  • Valves: Rotary 1
  • Bore: Medium Large 13.3mm (.525")
  • Water Key: Lever 1
  • Body: Yellow Brass
  • Finish: Lacquer
  • Lyre Box: No
  • Mouthpiece: JP605
  • Instrument Weight: 1.84Kg (4lb 1oz)



JP133MLR Medium Bore Bb/F Tenor Trombone Rose brass

  • Specification
    Key: Bb
    Bore: Large Bore (.547")
    Bell: 8.5" Rose Brass Bell
    Slide: Yellow Brass
    Tuning slide: Yellow Brass
    Waterkeys: 1
    Finishes: Lacquer with Rose Brass Bell
    Supplied with: JP Mouthpiece, Lightweight case
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