1/4 STIHL PICCO pitch, 0.043 gauge, 56-drive-link chains

This exact signature appears in 3 verified factory configurations across STIHL. All three chain dimensions must match; nominal bar length alone does not establish fit.

Verified models using this signature

• STIHL MSA 60 C-B — 10 in
• STIHL MSA 160 C-B — 10 in
• STIHL MSA 200 C-B — 10 in