<b>Product features:</b><br> â Squared handles, which makes it easy to tell 1/4 turn increments on the mixture settings. 1/4 turn is typically the increments you want when trying to tune a carburetor.<br> â Advanced heat treatment process and corrosion-resistant finish screwdriver bits are made to last with performance in strength and durability for your long time use.<br> â Carburetor cleaning needles and cleaning brushes can be used to clean carburetor and fuel lines, hex wrench to disassemble your machine.<br> â Special-designed tool carrying case, keep the carburetor adjustment tools and carb cleaning kits well organized in one place.<br> <br> <b>Must have for 2 Cycle engines to keep them in good performance: </b><br> â Can be fits for ZAMA, Walbro, Ruixing, Huayi, STHIL, Husqvarna, Poulan, Weedeater, Echo, Homelite, Ryobi, MTD, Troy-Bilt, Toro, Sears.<br> â string trimmer, chainsaw, leaf blower, hedge trimmer, edger, pole pruner and other machines that utilizes the carburetor adjustment tool.<br> <br> <b>Carburetor adjustment tool size:</b><br> â Big head tools: handle length 77.5mm, metal pole length 75mm, head diameter 5mm<br> â Small head tools: handle length 77.5mm, metal pole length 77mm<br> <br> <b>Carburetor cleaning kit size:</b><br> â Overall length: 4-inch<br> â Brush diameters: approximately 3mm, 4mm, 4.5mm, 5mm, 6mm, 7mm<br> <br> <b>Carburetor adjustment tools include:</b><br> â 21-Teeth Splined<br> â 7-Teeth Splined<br> â Single D<br> â Small Head Single D<br> â Double D<br> â Pac Man<br> â Small Head Pac Man<br> â Hexagon<br> â -Shaped<br> â Six Star<br> â A-circle<br> â Small A-circle<br> <br> <b>Cleaning kits include:</b><br> â 6pc cleaning needle<br> â 6pc cleaning brush<br> â 1pc hex wrench<br> <br> <b>100% Satisfaction Guarantee</b><br> â 90-days return, refund or free exchange if you aren't completely satisfied (defection, accidental damage, non-satisfaction etc.)<br>