Designed to fit Shimano GRX 4-bolt 110 Asymmetric BCD cranksets. The design has an ovality of 10% and a timing of 112 degrees after top dead center which provide the beneifits of an oval ring such as greater rear wheel traction without the traditional downsides of oval rings. These rings feature Wolf Tooth's Drop-Stop asymmetrical tooth design for the best in wear life, mud clearance, and chain retention.