FeaturesIndustry standard for fast and accurate synchronizing for up to four carburetor/fuel injection throttle valvesCan be used with two- or four-stroke enginesFour LED bars display manifold pressure, even in sunlightBuilt-in tachometer displays engine idle speed up to 2000 rpmDynamic mode to troubleshoot poor engine synchronizingIncludes a rechargeable 7.2V NiMH battery (can also be powered and recharged by the internal battery)Includes four M5 and four M6 unique flexi-rigid manifold adaptersSpecs Application: Carburetor Product Name: Synchronizer Riding Style: ATV Units: Each Riding Style: Watercraft Riding Style: Adventure Touring / Dual-Sport Riding Style: Snow Riding Style: Street Riding Style: UTV Color/Finish: Yellow Riding Style: Off-RoadApproximate Package Weight & Dimensions Weight: 3 Height: 2.5 Length: 12 Width: 7