MARTIN SPROCKET & GR
12B21 ROLLER CHAIN SPROCKET ; METRIC SNG AND DBL
Roller Chain Sprocket; 12B-1 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 137.82MM Outside Diameter; 127.82MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material
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Le numéro de pièce BDI