Ergonomic design. Refined lever hood for improved ergonomics. Robust internal mechanism. Same lever response as ST-7800. Ergonomic shift stroke movement. Effortless shifting. Shift effort is reduced on release lever. Short stroke shifting. Inward shift stroke distance is reduced by 10mm. Rear: 10-speed. Front: triple or double. Flight Deck Compatible SM-SC70. Flight Deck Gear Sensor. Max. Single Stroke Shifts: 3 (rear). Handle Bar Diameter: 23,8 - 24,2 mm. Bracket engineering plastic. Levers aluminum/clear coated. Super SLR. Shift Cable Casing SIS-SP41. Shift Cable stainless steel.