Shimano Dura-Ace R9100 SP41 Polymer-Coated Derailleur Cable Set, Black Training Wheels Metal piece sits right behind

Metal piece sits right behind the chainrings

HT6146 31989

128399-Q0-L

FX4908 TL0273

Shimano Dura-Ace R9100 SP41 Polymer-Coated Derailleur Cable Set, Black Training Wheels Metal piece sits right behindShimano Dura Ace OT SP41 Housing & Polymer Cable Derailleur Sets Polymer coated, stainless steel inner cable reduces the sliding resistance to achieve lighter and quicker operation and is rust resistant OT SP41 Housing is pre lubricated with silicone grease Sealed end caps to minimize dirt contamination Low friction polymer material on the cable may cause slippage at the cable fixing bolt after initial pre stretch for the cable is performed Product