2018 Shimano dura ace CS 7800 Titanium cassette 10 speed

DURA-ACE by shimano, 10 speed titanium cassette used for one season on my former DH rig. (about 42 miles total use approx)The cassettes is in escellent shape with no missing or broken teeth. This is also 9 speed compatible spacing if you are running a 9 speed system it is a 11x23. teeth are as follows: 23,21,19,17,16,15,14,13,12,11. WIll come in orignal packaging. Perfect for the steep descents and nearly indestructible and lighter than any steel cassette or steel aluminum combo.