YCL-657/657-24/647 German Clarinets

YCL-657 YCL-657-24 YCL-647
Key Bb Bb A
Fingering System Oehler, 27 keys, 5 rings Oehler, 24 keys, 5 rings Oehler, 27 keys, 5 rings
Barrel Length 54mm, 56mm 54mm, 56mm 54mm, 56mm
Toneholes Straight tone holes with tapered undercut Straight tone holes with tapered undercut Straight tone holes with hand-tapered undercut
Thumb-rest Fixed Fixed Fixed
Material Body Grenadilla Grenadilla Grenadilla
Keys Silver-plated nickel silver Silver-plated nickel silver Silver-plated nickel silver
Mouthpiece M3D M3D M3D
Case Included Included Included