The C116 chainrings are compatible with Shimano XTR cranksets(from 2003 to 2006).These chainrings are the perfect replacement for the Shimano XTR M960 rings and are 25% lighter compared to the originals!The special PCD, only used on the M960 crank bolt pattern makes it difficult to find a replacement if the original rings are worn.For clean up-shifts 4 shift pins are attached to the inside of the 32t and 44t ring.Produced in the FranceTechnical data:* Compatibility: only XTR M960* Material: aluminium 7075* Number of teeth: 22-32-44 teeth* PCD: 64mm, 102mm, 146mm* Speed: 8, 9, 10x* Colour: black, silver teethIndividual Ring data:* 44t, PCD 146mm, 5mm thickness, 63g* 32t, PCD 102mm, 5mm thickness, 34g* 22t, PCD 64mm, 4mm thickness, 19g