Bass Trombone.

Rim inside diameter (mm)28.42827.727.427.226.9
00.511.522.5
Denis Wick00AL0AL1AL2AL
2NAL
Bach1G1¼G
1¼GM
1½G
1½GM
Schilke5958
Kelly1½G
JK01AK
01BK
01A
01B
01C
1AK
1BK
1A
1B
1C
2AK
2BK
2A
2B
2C
3AK
3BK
3A
3B
3C
Doug Elliot111
112
110108106
Warburton1G
1¼G
1½G2G
Hammond2019
GriegoGP
1
1.25
1.52
Greg Black1¼G1⅜G1½G2G
Curry11.52
Best BrassBTB-1ABTB-2BBTB-3B
Yamaha6060B5958
AllianceBT1BT2