Use ultralight high-strength AL7075 Aluminium Alloy with high quality CNC machined, light weight but high strength.
Material: 7075 aluminum alloy CNC; nylon
Spec: BB mount / ISCG-05
Range: round : 32T-38T
Weight: CG-03 143g, CG-04 200g
Package: 1 pcs chain guide
Perfect for 1x system