Durable and economical saw chain sharpener tool makes hand sharpening easy. Includes a 12V car adaptor, battery clips, sharpening stones (5/32 In., 3/16 In., and 7/32 In.), and collet wrench. Simple sharpening angle adjustment guide for accuracy. High impact housing holds a powerful motor that runs at optimum 25,000 rpm. Sharpens saw chain up to .404 In. pitch. Ideal for occasional chain saw users.