absoluteBLACK Oval 96 BCD 1x Chainrings greatly improve traction and climbing abilities. They are designed for use with Shimano XT M8000, SLX M7000 and MT700 1x or 2x cranks only. 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 10.2 - 14.4%, with timing of 110.5-116.3° after TDC (top dead center).-Only compatible with Shimano XT M8000, SLX M7000 and MT700 1x or 2x cranks-Chainrings fit boost and non-boost bikes as correct offset is realized by the crank spider itself, not chainring-Oval shape reduces stress on knees, helps to keep your legs fresh, and does not feel any different while riding-Teeth have been 3D-machined for ultimate mud shedding and quieter operation-The unique patent-pending narrow-wide tooth profile keeps the chain in place-Chainrings have built-in standoffs to provide the ideal 1X chainline-For 49mm chainline-Only use the included extra long chainring bolts-50g