The overall length of the carburetor adjustment tool: 6-1/8 inches. (Metal shank: 3 inches. Plastic handle: 3-1/8 inches)Toolbox helps to; organize everything in one place: 21 tooth spline, 7 tooth spline, Pac-Man, single D, double D, hex socket, small Pac-Man head, small single D headFits: many brands of equipment including STIHL, Husqvarna, Poulan, Weedeater, Echo, Homelite, Ryobi and any other equipment that uses set screwsThe set screw driver carburettor adjustment is manufactured made of durable stainless steel, with an ergonomic handle and a metal rod, which makes the hand more comfortable. High quality carburetor adjustment tool, made of durable stainless steel, square handle, more comfortable to use. hand, easier to adjust the carburetor. The screwdriver is marked; with the type of tool on the handle for easy identification.If you have any questions or concerns, you can contact us first and your questions will be resolved with our support.