Black Bike Frame Housing Anti Friction MTB Bikes Bike Bottom Bracket Shifter Cable Guide Bike Cable Guide Bike Cable Holder Type:Bike Cable Guide_x000D_ Material:Plastic_x000D_ Color:Black_x000D_ Size:seen in the picture_x000D_ Package includes:1Pc Bike Cable Guide(Including one screw)_x000D_ Responsible for routing shift cables under the frame of the bicycle, a worn guide can have an adverse effect on performance and is very simple to replace._x000D_ Dual-Position mounting allows precise alignment of cable to derailleurs_x000D_ It is a vital part for guiding the brake and shifter wire between front and rear shifting/braking system if using bottom pull front derailleur_x000D_ For bicycle frame which using bottom pull front derailleur_x000D_ Smooth and low friction action _x000D_ _x000D_ _x000D_