Clutch bell pinion ZENOAH KOMATSU RED MAX Chainsaw Bell: 77,50 mm Shank: 14,00 mm Height: 23,90 mm Pitch: 3/8 Number of teeth: 7 for models: G561AVS G621AVS GT556 Part No.: 001658 Original part No.: 21358 ZENOAH KOMATSU RED MAX Chainsaw CS 500 510 550 610 451VL 452VL ECHO-KIORITZ-HOKKAIDO MOTORWAY ENGINE O.C.:21358 SR