Item Name: Lgnition Gasoline Chainsaw Engine Spark Plug Three-sided Pole L7T 2 Stroke. Total length: 5.3 cmModel: L7TScrew length: 9.5mmFeature: Three-sided poleElectrode gap: 0.6mmFits for Engine 2500 3800 4500 5200 5800 MS170/MS180 MS230/MS250 MS380/MS381 MS660 MS070 137/142 365/372 268/272 PT350/360 TU26 34F 36F 40F-5 44F-5Advantage: Compared with the single-sided pole spark plug, the multi-side pole spark plug provides multiple sparking passages, thus extending the service life and improving the reliability of the ignition.Thread size: M14*1.25Package: 1 pc spark plug Notes:1. Please allow slight deviation due to manual measurement.2. There may be slight chromatic aberration due to the difference between different lights and monitors, please understand. *Please make