Tecomec DELUXE Rapid Filer, it firmly clamps to the guide bar for easy, precise filing. Fully adjustable to sharpen virtually all chain types. If you go to YouTube and search "How to use a bar mounted chainsaw file guide sharpener" you will see this Tecomec filing tool in that video.
Note: The chainsaw file shown in the photo is not included:
Tecomec is an Italian company established in 1985 and is located in the Reggio Emilla region, this area is renowned worldwide for its top in quality technology. Tecomec is a company of the Emak Group which, in turn, belongs to the Yama Group with over 30 companies affiliates and represents the biggest Italian group engaged in the design, production and sales of farming, gardening and forestry applications.