![Shimano DEORE FD M590 M591 Bike Front Derailleur FD-M590 Dual Pull Clamp 34.9mm Bike Derailleur FD-M591 Shimano DEORE FD M590 M591 Bike Front Derailleur FD-M590 Dual Pull Clamp 34.9mm Bike Derailleur FD-M591](https://ae01.alicdn.com/kf/S497920e0d4604901bfac0276a1676e83k/Shimano-DEORE-FD-M590-M591-Bike-Front-Derailleur-FD-M590-Dual-Pull-Clamp-34-9mm-Bike.jpg)
Shimano DEORE FD M590 M591 Bike Front Derailleur FD-M590 Dual Pull Clamp 34.9mm Bike Derailleur FD-M591
![Jrspeed on Twitter: "#supercar #love Shimano DEORE FD-M590 9S 27S Front Derailleur 34.9mm Multi-Clamp Mountain Bike Front Derailleur https://t.co/gsA1uKzRd4 https://t.co/gHSHlR7LRP" / Twitter Jrspeed on Twitter: "#supercar #love Shimano DEORE FD-M590 9S 27S Front Derailleur 34.9mm Multi-Clamp Mountain Bike Front Derailleur https://t.co/gsA1uKzRd4 https://t.co/gHSHlR7LRP" / Twitter](https://pbs.twimg.com/media/EUCggWBU0AIMzFx.jpg)
Jrspeed on Twitter: "#supercar #love Shimano DEORE FD-M590 9S 27S Front Derailleur 34.9mm Multi-Clamp Mountain Bike Front Derailleur https://t.co/gsA1uKzRd4 https://t.co/gHSHlR7LRP" / Twitter
![derailleur front - What is the purpose of plastic insert/plug in Deore FD- M590? - Bicycles Stack Exchange derailleur front - What is the purpose of plastic insert/plug in Deore FD- M590? - Bicycles Stack Exchange](https://i.stack.imgur.com/FJbqb.jpg)