Shimano Specifications

Multiple Freewheel (MF)

Series		Tourney 37 Tourney 22	Tourney 22			Tourney 15
Feature		MF-HG37	MF-HG22			MF-Z015
IG
HG		X	X
UG						X
Speed		7 speed	6 speed			5 speed
Code		ax	X	Y	Z
Sprocket Teeth	7 (top gear)	14T
	6	16T	14T	14T	14T
	5	18T	16T	16T	17T	14T	14T
	4	20T	18T	18T	20T	17T	17T
	3	22T	20T	21T	24T	19T	20T
	2	24T	22T	24T	28T	21T	24T
	1 (low gear)	28T	24T	28T	32T	24T	28T
Material		Steel	Steel			Steel
Finish		Nickel plated	Black (corrosion resist coating)			Brown
		New	Z-type (14T-32T) is for single front chainwheel. Chain protector CP-HG22 available.

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