Shimano XT RD-M786-GS Rear Derailleur - 10 Speed Medium Cage Black CheckoutSpec= 7.3mm OD Primary Color Black Bead Folding

Primary Color Black Bead Folding TPI 3x110TPI Tire Type TT Tire Weight 245g Tire Width 25C Tire Width Range 18 - 29 Labeled Size 700x25C Tire Diameter/ISO 700C/622 e-Bike approved No

it is not a medical device)

8mm is for road

Includes four standard

Shimano XT RD-M786-GS Rear Derailleur - 10 Speed Medium Cage Black CheckoutSpec= 7.3mm OD Primary Color Black Bead FoldingShimano Deore XT RD M780 M770 Series Rear DerailleursLow profile design and single tension construction keeps the derailleur body from contacting the chainstay Stronger return spring for more crisp shifting feeling Direct routing reduces the risk of snagging Largest Cog 36 Color Black Rear Der Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type Shimano Rear Direct Mount Drivetrain Speeds 10 Weight 262 Chain Wrap Capacity (teeth) 43 Cage