The pBone has a bore size of 12.7mm which is .500 of an inch. For the full technical specifications of the pBone trombone use the link below to access our product page.
Dudley Bright pBone mini review
August 20, 2013
Looking after your pBone!
August 5, 2013
Brass for Africa (Kampala, Uganda) – Simon Hogg
March 24, 2013
Grant Golding Vlog: Life in the Orchestra
March 3, 2021
Grant Golding Vlog: The Arban
Grant Golding Vlog: How To Hack Scales