Shimano XTR asymmetrical 96BCD oval chainrings are designed for XTR 9000/9020 cranks that feature an asymmetric 96BCD \n Oval rings help the rider to spin smoother and more efficiently \n 32t is equivalent to 30t at dead spot and 34t at the power zone \n Narrowwide tooth profile keeps the chain snug, allowing you to leave the chain guide behind \n Not for Shimano 12spd Hyperglide+ chain \n Designed in UK, manufactured in Poland