Specs: Description: 12 V. Dc Electric Sharpener , For use with sharpening all saw chain pitches (TriLink S, M, and L chains); use correct corresponding stone , Includes wrench for quickly changing out grinding stones , Removable angle adjustment guide provides precise sharpening with no guesswork , A sharp chain is a safe chain; check chain frequently and sharpen as needed , 25, 000 RPM DC powered motor for quick, easy, precise sharpening , Heavy-duty power cord and rust-resistant construction provides long-lasting durability Replaces OEM Numbers: Oregon: Oregon DC Sharpener Compatible With/Replacement For: Includes one each of the following grinding stones: 5/32″ (4.0mm), 3/16″ (4.8mm), and 7/32″ (5.5mm)