gap solutions made simple

Increase Flexibility

Adjust Slotting

Increase or Decrease Air Flow

---

Harrelson solutions simplify the process of Solving Mouthpiece Gap issues

How to achieve optimum Mouthpiece Gap in 3 easy steps - Part 1

Achieving Optimum Mouthpiece Gap in 3 Steps - Part II

Harrelson Shim Kit to reduce gap: A Survey of Thirty-one Mouthpieces

Complete Mouthpiece Gap Solution Kit

$125.00

The more affordable way to adjust gap, impedance, flexibility, and slotting!

Shop