This is the SRAM Force 1x Aero Power Meter E1 Crankset Chainring Combo, Speed: 12/13, Spindle: 28.99mm, BCD: Direct Mount SRAM 8 Bolt, 50 Teeth, DUB.

Features:

• Measure your ride power data more accurately than ever with the Force 1 AXS power meter. It’s the lightest and stiffest integrated Force power meter yet.
• Accurate to +/-1.5% and unaffected by temperature changes
• Power meter is fully integrated into the chainring for lighter weight and greater accuracy
• Measures right and left leg power balance
• SRAM Model ID: FC-FRC-1P-E1

Product Specifications:

• BCD: Direct Mount SRAM 8 Bolt
• BB Inclusion: No
• Drivetrain Spacing: Road
• Teeth: 50
• Crank Arm Length: 160mm, 165mm, 170mm, 172.5mm, 175mm
• Crankset Material: Carbon
• Interface: DUB
• Primary Color: Black
• Speed: 12/13
• Crank Spindle Diameter: 28.99mm
• Chainline: 45mm
• Pedals Thread: 9/16"
• Connectivity: ANT+, BT LE

Vendor Item No:

• 00.6118.741.000 (Crank Arm Length 160mm)
• 00.6118.741.001 (Crank Arm Length 165mm)
• 00.6118.741.003 (Crank Arm Length 170mm)
• 00.6118.741.004 (Crank Arm Length 172.5mm)
• 00.6118.741.005 (Crank Arm Length 175mm)