This is a gasket, bearing and seal kit for West Bend 820s, Chrysler Power Bee 820s and US820 2 stroke engines. A 506 crankshaft key for a 82007 or 82031 Rokon engine is included. A 606 crankshaft key for a 82030 Sno Runner Engine is also included. The base gasket fits old and new style Power Bees. The ball bearings have a single seal. The seal should face towards the outside of the engine or it can be easily removed if so desired. 3 intake gaskets are included for the carb elbow.