This is the SRAM XG-1299 XX1 Eagle Cassette, 12 Speed, Range 10-50T, Cassette Technology X-Dome.

Features:

• SRAMs cassette manufacturing technology provides the greatest durability and lightest weight
• All-new shifting features create a smoother, quieter system with enhanced inboard and outboard shift performance
• XD driver body compatible
• SRAM Model ID: CS-XG-1299-B1

Product Specifications:

• Range: 10-50T
• Speed: 12
• Cassette Weight: 300g
• Cog Details: 10-12-14-16-18-21-24-28-32-36-42-50
• Finish: Gold, Rainbow, Copper
• Cassette Spider Material: Steel
• Cassette Technology: X-Dome
• Cog Material: Steel/Aluminum

Vendor Item No:

• 00.2418.072.000 (Gold, 10-50T, X-Dome)
• 00.2418.098.000 (Rainbow, 10-50T, X-Dome)
• 00.2418.139.000 (Copper, 10-50T, X-Dome)