Great quality classic Shimano 600EX 6 speed freewheel. Standard English / ISO 1.37" x 24 tpi threads. Made in Japan in the mid to late 1980`s. Uniglide tooth profile and part of the first generation of Shimano SIS indexable gear sets.
SHIMANO 600EX 6 SPEED UNIGLIDE FREEWHEEL CHOOSE FROM 13-18 , 15-20 , 13-24 TOOTH
Shimano MFTZ500 6-Speed Bicycle and Bike Freewheel
SHIMANO TOURNEY 6 SPEED SIS REAR DERAILLEUR RD-TY18 WITH / WITHOUT MOUNTING BOLT
Vintage Shimano SIS 6 Speed pair
