Shimano, RD-RX810 GRX , Rear Derailleur, 11-Speed

SPECIFICATIONS
Total Capacity: 40T
Max Front Difference: 17T
Colour: Series Colour
Average Weight: 225g
Mount: Direct attachment (conventional)/Direct mount compatible
Number Of Pulley Teeth: 13T
Max Low Sprocket: 34T
Min Low Sprocket: 30T 
Rear Speeds: 11
Top Normal Spring Type: Shimano Shadow RD+