Crupi Aluminium Cassette Cog

Crupi cogs are Shimano compatible and designed to be reversed with 1mm of spacing on 1 side and 2.2mm of spacing on the other side for optimal change alignment!
Features:

• 6061 T-6 CNC Machined Aluminum
• Machined holes to eliminate weight
  

Specifications:
Sizes: 12T through 18T  x 3/32" 
Weight: 16T = 0.49 oz