22T

 6061-T6 alloy construction 8 and 9-speed compatible Silver anodized finish CNC Made in the U.S.A. 58mm 5-bolt 22T 6061-T6 Silver 8/9sp Standard

 AL6061-T6 alloy replacement rings 8, 9, and 10 speed compatible Black anodized with silver CNC machined teeth Available in ramped/pinned and standard styles Made in the USA 58mm 5-bolt 22T Non Ramped Black/Silver 8/9/10sp Standard