Polaris Sergio Bosi Black Edition Barrel

The Polaris adjustable barrel is made from a whole piece of aged grenadilla wood. US Patent-Pending technology and a special single thread design with O-ring allows the clarinetists to adjust pitch with the simple turn of the center ring. There is no gap created by in the bore as you no longer have to pull out from the tenon. Finger curvature measure every 0.25mm movement for accuracy . The length is adjustable from 64mm to 68mm for fine tuning and use on Bb and A clarinets.

All Polaris models have a slightly tapered bore for maximum response, resonance, projection, and depth of sound .

US and other International Patent Pending.
China, Europe Union and UK Patented.

Designed for all Clarinetist in Solo, Chamber music and Orchestra playing.