Shimano Saint RD-M820-SS1 Rear Derailleur - 10 Speed Short Cage Black MFPN=GXA 100 000 00 000 Key stress areas are reinforced Straight pull hub spokes CheckoutSpec= EC44/EC44 BT3029 Size:128

Shimano Saint RD M820 SS1 Rear Derailleur 10 Speed Short Cage Black MFPN=GXA 100 000 00 000 Key stress areas are reinforced Straight pull hub spokes CheckoutSpec= EC44 EC44 BT3029 Size:128 Key stress areas are reinforced for strength and durability Compatible with Shimano's SW RS801 S T E satellite shifter (sold separately) Brake Lever Actuation Hydraulic Double or Triple Double Rotor Included No Brake Lever Use Left Drivetrain Speeds 12 Front Der Shifter Compatibility Shimano Road Di2 Color Black Hydraulic Fluid Type Mineral Oil Includes Brake No Adjustable Reach Yes Adjustable Contact Point Yes Defined Color Black Side Left