Blackspire SNAGGLETOOTH WP chainring 96BCD 30t - blk Narrow/Wide oval chainring, CNC'd out of 7075 T-6 aluminum for durability Cut from 0.313" thick aluminum plate for lightweight and strength Features an Ovality of 12-13% with a Timing of 115 after TDC (Top Dead Center) Designed specifically for use with Shimano XT M8000 Cranks For use with 9, 10, 11, or 12 speed drivetrains