MB-44-PY Schneider double bass 4/4 MB-34-PY Schneider double bass 3/4 MB-12-PY Schneider double bass 1/2 MB-14-PY Schneider double bass 1/4 MB-18-PY Schneider double bass 1/8 MB-34-ST Schneider double bass 3/4 MB-12-ST Schneider double bass 1/2 MB-14-ST Schneider double bass 1/4 MB-18-ST Schneider double bass 1/8 MB-134-ASA Schneider double bass 3/4