50T

 Precision CNC machined AL7075/T6 Shifting ramps and stainless steel pins for smooth shifting Laser etched logo with CNC machined silver detail 130mm 5-bolt 50T Ramped/Pinned 7075AL 9s Triple Black 9sp Standard

 Precision CNC machined AL7075/T6 Shifting ramps and stainless steel pins for smooth shifting Laser etched logo with CNC machined silver detail 130mm 5-bolt 50T Ramped/Pinned 7075AL 10s Triple Black 10sp Standard

 6061-T6 alloy construction 8 and 9-speed compatible Silver anodized finish CNC Made in the U.S.A. 130mm 5-bolt 50T 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 130mm 5-bolt 50T Ramped/Pinned Black/Silver 8/9/10sp Standard