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 teeth.Individual Ring data:44t, PCD 146mm, 5mm thickness, 63g,32t, PCD 102mm, 5mm thickness, 34g,22t, PCD 64mm, 4mm thickness, 19g.