Details: The Log Wizard attaches easily to most any 65cc or under chainsaw. You can make notches or debark poles for: barns, fences, bridges, log home construction and more! Save time and save money. Features all-ball- bearing construction for long life and durability. Uses standard 3-1/4" planer blades. Comes complete with universal spline/sprocket system, which accommodates 3/4" ID rim sprockets (small spline). Requires some bar drilling and the saw chain needs to be lengthened.Installation instructions and parts break down (1.7Mb pdf file)To view the Log Wizard demonstration video just click the "Play" button on the window below.To view the Log Wizard installation video just click the "Play" button on the window below.