2 Cycle Carburetor Adjustment Tool 21 Teeth Splined / Pac Man / Single D / Double D / 7-Teeth Splined Pac Man / Hexagon Carb Screwdriver for Common 2 Cycle Small Engine(Set of 6) Tool is designed for Certified Technicians to tune carburetors, and keep engine within EPA specs Package include: 21-Teeth Splinded / 7-Teeth Splined / Pac Man / Single D / Double D / Hexagon screwdriver Used on most 2 cycle engines; Fits many brands of equipment, including Sears, Craftsman, Poulan, Husqvarna, Weedeater, Echo, Toro, Ryobi, Homelite, and anything else that utilizes the splined adjustment screws Note: The 21-teeth Splined tool is used on ZAMA carburetors. Wablro carburetor may need a 22-teeth splined tool Durable for a long time. The materials is of good quality, and of sophisticated production