Made of Aluminum alloy,plastic and iron wire,durable,wear and tear resistance.Include inner gear cable. Apply for 18/21 speed bicycle.Efficiently make you ride the bicycle more comfortable.Dimensions: app.13 x 11 cm. Fit handlebar: 22.2 mm. Cable length: about 165 cm-205 cm.Can be applied for some ordinary bicycle,mountain bike,folding bicycle,road cycling,etc.Colour Name:BlackDescription:100% brand new and high qualityDurable,wear and tear resistance.Apply for 18/21 speed bicycle.Include inner gear cable.Aluminum alloy and iron cable materials products.Efficiently make you ride the bicycle more comfortable.Can be applied for some ordinary bicycle,mountain bike,folding bicycle,road cycling,etc.TypeDerailleurMaterial:Aluminum alloy + plastic + iron wireColor:Black(As shown in the picture)Dimensions: app.13 x 11 cmFit handlebar: 22.2 mmCable length: about 165 cm-205 cmNote:1.Transition: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank youPackage includes( without retail package):A Pair of Derailleur x 1A Pair of Grip x 1