hipa carburetor adjustment tool kit screwdriver # 530035560 for 2 cycle poulan homelite sthil husqvarna echo chainsaw trimmer lawn mower edger hipa <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upgraded from previous 7-teeth to current 21-teeth<br> âmarked with tool type on the handle, easy to recognize.<br> <br> <b>must have for 2 cycle engines to keep them in good performance:</b><br> â can be used on zama, ruixing, huayi, husqvarna, poulan, weedeater, sears, craftsman<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 handle length 3-inch, metal pole length 3-1/8-inch, head i.d. 5/32", head o.d. 7/32"<br>