absoluteBLACK Oval 110 BCD 1x Chainrings for Gravel greatly improve traction for gravel or road 1x setups. They are designed for all Shimano 5-bolt cranks such as Dura-Ace 7950, Ultegra 6750, Shimano 105 5750 and more. The specially designed narrow-wide tooth profile keeps the chain snug, allowing you to leave your chain keeper in the garage. They are crafted from CNC machined 7075 aluminum, and feature an anodized finish for exceptional durability. Ovality has been optimized for each chainring size, ranging from 10.5 - 11.4%, with timing of 112 - 113Adeg after TDC (top dead center).Oval shape reduces stress on knees, helps to keep your legs fresh, and does not feel any different while ridingTeeth have been 3D-machined for ultimate mud shedding and quieter operationThe unique patent-pending narrow-wide tooth profile keeps the chain in placeProvides excellent weight to strength ratio12-Speed Eagle compatibleChainring has 1.5mm offset towards frame to provide the perfect chainlineChainring bolts are included