The square handle makes it easy to distinguish 1/4 turn increment on the mixing setting. A quarter turn is usually the increment you need when trying to adjust the carburetor.Advanced heat treatment technology and corrosion-resistant surface screwdriver bits are durable and can be used for a long time.The carburetor cleaning needle and cleaning brush can be used to clean the carburetor and fuel pipe, and a hexagon wrench to disassemble your equipment.The specially designed tool suitcase makes the carburetor adjustment tool and the carbohydrate cleaning kit be stored neatly and orderly.A 2-cycle engine must have to maintain good performance: Can be used in ZAMA, Walbro, Ruixing, Huayi, STIHL, Husqvarna, Poulan, Weedeater, Echo, Homelite, Ryobi, MTD, Troy-Bilt, Toro, Sears.String trimmers, electric saws, leaf trimmers, hedge trimmers, edge trimmers, pole trimmers and other machines that use carburetor adjustment toolsThe 12-piece carburetor adjustment tool set includes: 7 tooth spline carburetor adjustment tool21 tooth spline carburetor adjustment toolSingle D carburetor adjustment toolSmall head single D carburetor adjustment toolDouble D carburetor adjustment toolPac Man Carburetor Adjustment ToolSmall Head Pac Man Carburetor Adjustment ToolHexagonal Carburetor Adjustment ToolShape carburetor adjustment toolSix-star carburetor adjustment toolA-type carburetor adjustment toolSmall A-type carburetor adjustment toolColour: blackMaterial: metalPackage Contents: 13 * accessories2 * lever tool1 * carburetor cleaning kit1 * suitcaseOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.