Fit : for Shimano 12s Di2 Dura-Ace R9250 R9200/ Ultegra R8150, R8170, R8100/ 105 R7150, R7100/ FORCE AXS
Also compatible with 10s,11s road bike, not fit mountain bike(Red 11s, etap 11 speed electric Derailleur not support)
Function:To achieve the use of big/small tooth chainring of road bike by rising or lower the front derailleur height
Elevated/lower distance: 15.5mm
Material: 304
Weight: 9g