The Gamma Pro MegaTooth's teeth are longer than standard with an asymmetric profile shape, a diamond-shaped cross-section, and a unique system of alternating thick then thin teeth. This allows for smooth chain engagement, meaning that the chain always remains in close contact with the chainring to give you the most reliable and positive drive possible. Thick-thin tooth design for maximum chain engagement. Long tooth profile enhances chain retention. Heat-treated forged steel for maximum wear life. Compatible with Gamma Pro and Alpha Drive 1x crankset. Item Specifications: Tooth Count: 30, Ring Position/Type: Single, Drivetrain Speeds: 11, Chainring BCD: 82, Color: Black, Defined Color List: Black, Material: Steel,