Carburetor Screwdriver Kit compatible for STIHL, Husqvarna, Poulan, Weed Eater, MTD, Troy-Bilt, Homelite, Ryobi and anything else that uses adjustment screws. Total screwdriver length: 8 inches. Advanced heat treatment process and corrosion-resistant finish screwdriver bits, strong and sturdy. Our carburetor screwdriver uses square handles, making it easy to determine 1/4 turn increments on mixture settings when trying to adjust a carburetor. Package includes: 1pc Pac Man + 1pc Single D + 1pc Double D + 1pc Hex Socket + 1pc 7-Tooth Spline + 1pc 21-Tooth Spline + 1pc Small Pac Man Head + 1pc Small Single D Head.