1ABS Material: This product is made of ABS material, which is sturdy, durable, and not easy to wear. It can be used by users for a long time without worrying about quality issues. 2Product Performance: This tool adopts advanced heat treatment technology and topcoat screwdriver head, and it must have a 2 cycle engine to maintain excellent performance. It adopts a squared handle; When attempting to adjust the carburetor, it is easy to set a 1/4 turn increment on the mixture setting. 3Tachometer Function: The package contains a tachometer that can read the current engine speed and help adjust the engine idle speed. 4Convenient to Carry: This product is small in size, light in weight, and easy to carry and store; Users can easily take it to any place they need. 5Strong Compatibility: It is compatible for ZAMA, for Walbro, for STHIL, for Husq varna, for Craftsman, for Poulan, for Weeeater, for Homelite, for Ryobi, for MTD, for Troy Bilt, for Toro, for Sears; It can be used to string trimmers, chain saws, leaf blowers, hedge trimmers, trimmers, pole trimmers, and any other equipment.14 x Carburetor Adjustment Tool1 x Tachometer2 x Tie Straps2 x Screws1 x Connecting Line1 x Storage Bag