Compatible with all 9,10,11-speed chains, 12-speed SRAM Eagle, KMC, Shimano HG+ 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 droppingGarbaruk Direct Mount Chainring Advantages:- You get a wide range of chainring sizes to choose from, starting from 26T- You can reach an optimal drivetrain chainline value with variable chainline technology (VCLT)- You save bike weight by not using crankset spider and you can opt for the chainring with an appropriate specs for your drivetrainOval Chainring Advantages:- Even at-the-wheel distribution of pedaling torque- Improved responsiveness and pedaling smoothness, narrower dead spots and increased span of your gluteus and hamstrings- Easier uphill riding, especially on soft and slippery terrains- Increased pedaling efficiencySpecifications:- Model: 30T - Chainring shape: Oval- Offset, mm: 3.7 (30T)- Made from: 7075-T651 Aluminum Alloy- Surface coating: Anodizing- Made with: CNC milling- Ovality: 12%- Timing: 108° after TDC (top dead center)- Compatible cranksets: SRAM X9, X1, NX, GX, X0, X01, XX1, X01 Eagle, XX1 Eagle. Cane Creek eeWings Mountain- Weight, grams: 51 (30T)- Chainline, mm: 50.7 (30T)- Chain compatibility: Compatible with all 9,10,11-speed chains, 12-speed SRAM Eagle, KMC, Shimano HG+ chains.