Description
Shimano Dura Ace FD R9150 Di2 11 Speed Braze On Front Derailleur CheckoutSpec= Bundle of 25 Ramped center knobs form a Ramped center knobs form a nearly uninterrupted centerline that decreases rolling resistance while its round tire profile is packed with short tightly spaced knobs to provide predictable cornering traction on hardpack terrain (mm) 24 Material Ceramic Thickness 5