38T

 The ultimate choice for cyclocross drivetrains Narrow/Wide tooth profile helps prevent dropped chains Ideal for 1x 9/10/11 system and single speeds Compatible with all 110/130mm 5 Bolt cranks Specially designed chamfers help resist mud build up 7075 Aluminum construction 130mm 5-bolt 38T 7075AL Black 1/9/10/11/12sp Narrow/Wide

 The ultimate choice for cyclocross drivetrains Narrow/Wide tooth profile helps prevent dropped chains Ideal for 1x 9/10/11 system and single speeds Compatible with all 110/130mm 5 Bolt cranks Specially designed chamfers help resist mud build up 7075 Aluminum construction 130mm 5-bolt 38T 7075AL Red 1/9/10/11/12sp Narrow/Wide

 6061-T6 alloy construction 8 and 9-speed compatible Silver anodized finish CNC Made in the U.S.A. 130mm 5-bolt 38T 6061-T6 Silver 8/9sp Standard

 6061-T6 alloy replacement rings 8, 9 and 10-speed compatible Black anodized with silver CNC machined teeth Made in U.S.A. 130mm 5-bolt 38T Non Ramped Black/Silver 8/9/10sp Standard

 Genuine Sram replacement rings for Road and Sram Red cranksets Not compatible with new Sram hidden bolt style cranks 110mm=Compact 130mm=Standard Road  130mm 5-bolt 38T 3mm Black 10/11sp Standard