Description Brand new set of crankshaft bearings and double lipped crankshaft seals. Fits Stihl chainsaw model MS660, 066, MS650, and 064.   SKF flywheel side bearing, New West(C&U) clutch side bearing and BAO double lipped seals.   1 year warranty against manufacturer defects. Wolf Creek Saw Shop is a proud U.S. seller, we ship within 1 day of receiving payment, and you will get your parts quickly!