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Quoting: 50A30 2 Linn — Roller Chain Sprocket; 50 Chain; 30 Teeth; 1 Row of Teeth; No Hardened Teeth; 6.321" Outside Diameter; 5.979" Pitch Diameter; A-No Hub; Rough Bore Mount; No Bushing; 5/8" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material, 2" Bore

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