10pcs Upgraded Carburetor Adjustment Screwdriver Set. Comes with 21 Splined Teeth + 7 Splined Teeth + Single Head D + Single Head D + Double D + Pac Man + Small Head Pac Man + Hexagon + Shapde + Six Carburetor Cleaning Tools Easy to adjust your 2 cycle small engine carburetor. A complete repair tool for adjusting most carburetors for 2-stroke small engines, such as stihl, husqvarna, poulan, troy-bilt, ryobi, craftsman, chainsaw, weed eater, blower, lawn mower, trimmer, etc. Keep your engine within EPA specifications and running perfectly. Heavy duty carburetor adjustment head, ergonomically designed square handle, more convenient and comfortable to adjust the carburetor, easy 1/4 turn increments on mixture adjustments. Marked with tool type on the handle, easy to recognize the carburetor rebuild screw tools. Comes with a tool kit, keeps all 8 tools stored in one place.