Torque converter comes with a 10 Tooth sprocket for a #40/41/420 chain and a 12 Tooth sprocket for a #35 chain(chain not included). It will work with engine sizes 2HP to 8HP(6HP-6.5HP is the most suitable horsepower). This 3/4″ Torque Converter is fully compatible with Comet and TAV2 torque converters. It fits all engines with a 3/4″ straight crankshaft. Replaces Comet, also apply to Manco go-karts. Unit replaces: Comet 218353A, 219552A, 219456A, 217610A, 203814A, TAV2 30-75, Yelf Dog Drive Unit Q43201W. 30 series of asymmetrical designs, some parts have been assembled. The torque converter is made of high-quality iron and aluminum material, which is light, strong, and durable. The clutch obtains more power by reducing the engine load for smooth acceleration and gear shifting. Our clutch kit obtains a 3/4″ driver clutch, a 5/8″ driven clutch, a plastic assy cover, an aluminum mounting plate, a drive belt(top width 3/4″), a 10 Tooth sprocket, a 12 Tooth sprocket, full mo