Frost
Threaded Sleeves allow adjustment for how far the mouthpiece/backbore
inserts into the leadpipe receiver. The sleeves thread
onto the mouthpiece shank that has been modified to accept them.
Frost Threaded Sleeves are available in 5 sizes:
1 - 0.341" shank end diameter (smallest)
2 - 0.343" shank end diameter
3 - 0.345" shank end diameter (stock shank size)
4 - 0.347" shank end diameter
5 - 0.349" shank end diameter (largest)
Frost Threaded Sleeves Modification
$45 - convert your cornet mouthpiece or backbore to accept sleeves. Contact here for custom work.
