This is the SRAM Red XPLR AXS Threadmount Power Meter Spider Crankset.

Features:

• Thread mount design is light, stiff and accurate, and available in 38T-46T
• User replaceable CR2032 battery with 200-hour battery life
• Bluetooth low energy technology and ANT+ wireless data transfer
• MagicZero automatically checks and recalibrates your power meter as you ride
• No cadence magnet required
• AXS enabled for easy monitoring and firmware upgrades
• SRAM Model ID: PM-AXS-SPDR-E1

Product Specifications:

• Speeds n/a
• Crank arm length n/a
• BB Compatibility n/a
• Chainring Size n/a
• Bolt Circle Diameter (BCD) Thread Mount
• Chainline n/a
• BB Spindle Interface DUB
• Chainring material n/a
• Power Meter Type Ant USB
• Hub Spacing Compatibility n/a
• Chainring Offset n/a
• Vendor Item No. 00.3018.388.000