Carburetor Adjustment Tool Screwdriver Made of Long Lasting Stainless Steel, Ergonomic Grip and Metal Pole, More Comfortable Hand Feeling. Replace Manufacture Part Number: 530035560. 21 Splinded Teeth, for ZAMA Carburetors. 21 Teeth Splined Carburetor Adjust Screwdriver Fits Kinds of Brands Including Sears, Craftsman, Poulan, Husqvarna, Weedeater, Echo, Toro, Ryobi, Homelite And Anything Else That Utilizes The Splined Adjustment Screws. Walbro Carburetor May Need A 22-Teeth Splined Tool. Tool is designed for Certified Technicians to Tune Carburetors, and keep engine within EPA Specs., Weight: 0.06834330121999999 pounds, Manufacturer: Cemobile