This is the Quarq DZero AXS XX1 Eagle DUB Spider Power Meter Crankset.

Features:

• Magic Zero: Automatically check and recalibrates your power meter to ensure it is always accurate.
  
• AXS app: Easily update firmware and view power meter metrics.
  
• OmniCal: Swap chainrings without affecting accuracy.
  
• 10K TEMPERATURE COMPENSATION: Each power meter is programmed with over 10,000 data points to eliminate temperature effects on power measurement.
  
• For use with XX1 Eagle DUB 8 bolt cranks only.
  
• Not compatible with 3 bolt cranks.
  
• SRAM Model ID: PM-DZ-SPDM-D1

Product Specifications:

• BCD: Direct Mount SRAM 8 Bolt
• BB Inclusion: No
• Drivetrain Spacing: Boost
• Chainline: 52mm
• Connectivity: ANT+, BT LE
• Vendor Item No. 00.3018.269.000

Shipping Weight & Dimensions:

• Shipping Length (L): 8.9"
• Shipping Width (W): 8.3"
• Shipping Height (H): 2"
• Shipping Weight: 0.7 lb