This is a Shimano XTR 9-speed triple crankset, model FC-M950. With Hollowtech construction, this was Shimano’s light and stiff flagship model. This one has 170mm arms (which are pretty rare) and 24, 34 and 46 tooth chainrings (all original). This crankset is in good working order. The arms are straight and in-plane, and the chainrings are round and flat with much life left. There is some cosmetic wear from use. Includes the original (and unique) one-key releases. I have uploaded large detailed photos. Please take a look. Thank you!