SPROCKET WITH FIXED SPOOL ALPINA CASTOR CHAINSAW MODELS: WITH ROLLER CAGE ROLLER CONVEYOR BEARING For chainsaw P 34 360 370 390 PR 350 MEASUREMENTS: Outer diameter: 60 mm Bearing seat diameter: 14 mm Pitch 3/8 Number of teeth: 6 Reference : 656023 Original reference code: 4121208 GGP - ALPINA CASTOR CASTELGARDEN