NOS Shimano downtube dual cable derailleur cable guide. One side routes the cable to the rear derailleur, the other acts as the cable stop for the front derailleur cable. These were manufactured in the 1980's for certain 10 speed road bikes.
Material: Stamped steel
Size: 28.6mm (1 1/8")
NOTE: This is an NOS item (New-Old Stock), meaning it is brand new, but very old inventory (probably about 25 years old). These came from Shimano in bulk, therefore there is no retail packaging. As always, NOS does not mean perfect - it just means old and unused. If you want new, buy new - NOT NOS.