The Stihl 3689 005 0081 (26 RM3)

is a 20-inch saw chain designed for mid-range and high-displacement Stihl chainsaws using a .325" pitch and .063" gauge guide bar.

Technical Specifications

Chain Type: RM3 (Rapid Micro 3) semi-chisel.

Bar Length: 20 inches (50 cm).

Drive Links: 81 links.

Pitch: .325".

Gauge: .063" (1.6 mm).

Sharpening Size: Requires a 3/16" file.