FSA Megatooth 1X10/11Speed Chainring Full Speed Ahead Super Road Mega Tooth Chainrings are designed for 1x road drivetrains. Features Mega Tooth technology ensures chain stays secure5-hole or 4-hole bolt pattern SPECIFICATIONSMaterial Aluminum Ring Position/Type Chain Retaining Single Ring Drivetrain Speeds11SPECIFICATIONSVariant Manufacturer Part Number42Tooth, 110Bcd, 5 bolt370-001900105038Tooth, 110Bcd, 5 bolt370-001701705036Tooth, 110Bcd, 5 bolt370-001602405044Tooth, 110Bcd, 5 Bolt370-002000205042Tooth, 110Bcd, 5 Bolt370-001900105040Tooth, 110Bcd, 5 Bolt370-001801205038Tooth, 110Bcd, 5 Bolt370-001701705036Tooth, 104Bcd, 4 Bolt380-009100305034Tooth, 104Bcd, 4 Bolt380-006500205032Tooth, 104Bcd, 4 Bolt380-0064001050 | Fsa | Megatooth 1X10/11Speed Chainring 36T