Compatible with ZAMA, Walbro, STHIL, Husq-varna, Craftsman, Poulan, Weedeater, Echo, Homelite, Ryobi, MTD, Troy-Bilt,Toro, Sears, Ruixing, Huayi; trimmer, chainsaw, leaf blower, hedge trimmer, edger, pole pruner and anything else that uses carburetor adjustment tools. Square handles, making it easy to determine 1/4 turn increments on mixture adjustments when trying to tune a carburetor; Advanced heat treatment process and hard-wearing screwdriver bits corrosion Color: Black