Shimano Specifications

Chain (CN)

Feature Model No.	CN-IG90	CN-IG70	CN-IG51	CN-IG31	CN-HG50
IG	X	X	X	X
HG					X
UG
COLOR Pen link plate	Silver	Silver	Silver	Gray	Black
COLOR Pen link plate	Silver	Gray	Gray	Black	Black
Chromizing treatment link pin	X	X	X		X

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