Compatible with all 9,10,11-speed chains, 12-speed SRAM MTB (Eagle&T-type),; KMC, Shimano HG+, SRAM AXS Flattop chains.Features: - Special tooth shape guarantees a tighter contact with chain and softer pedaling (in comparison with regular chainrings)- Chamfered edges and wide mud gap keeps the ring from getting muddy- Increased tooth height improves chain retention while the bike is shivering and jolting- Overall bicycle weight reduction in the range of 150-400 grams (with no front derailleur and chainguide)- Manufactured using highly durable aluminum alloy- Variable teeth thickness prevents chain droppingSpecifications:- Model: 50T- Offset, mm: -2.5 (50T)- Made from: 7075-T651 Aluminum Alloy- Surface coating: Anodizing- Made with: CNC milling- Compatible cranksets: Cannondale Hollowgram Si/Si 2016, SiSl2- Weight, grams: 131 (50T)- Chain compatibility 10/11/12-speed chains : including Shimano HG+ and SRAM AXS flattop (incl. T-type) chains