Description Brand new set of crankshaft bearings. Fits Stihl chainsaw model MS660, 066, and 064. Good quality set made by SKF (flywheel side bearing, steel cage) and C&U (clutch side bearing, nylon cage). 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!