SRAM Force 2x Powermeter E1 Power Meter Crankset Speed: 12 Spindle: 28.99mm BCD: Thread Mount 50/37 DUB 160mm Black RoadBuilt upon the stability and accuracy of the RED AXS integrated power meter, now providing riders even more options for customization and serviceability at the Force level. Spider based powermeter measures right and left power, and allows riderto thr TECH SPECS BCD Thread Mount BB Inclusion No Chainline 45mm Teeth 50 37 Connectivity ANT+ BT LE Crank Spindle Diameter 28. 99mm Crank Arm Length 160mm Interface DUB Crankset Material Carbon Pedals Thread 9