42T

 CNC machined AL6061-T6 alloy construction Great for all single speed applications Anodized finish Made in the USA 110mm/130mm 5-bolt 42T Black 1/2` x...

 CNC machined AL6061-T6 alloy construction Great for all single speed applications Anodized finish Made in the USA 110mm/130mm 5-bolt 42T Black 1/2` x 3/32` StandardUPC/EAN/GTIN: 072774022755

 CNC machined AL6061-T6 alloy construction Great for all single speed applications Anodized finish Made in the USA 110mm/130mm 5-bolt 42T Silver 1/2` x...

 CNC machined AL6061-T6 alloy construction Great for all single speed applications Anodized finish Made in the USA 110mm/130mm 5-bolt 42T Silver 1/2` x 3/32` StandardUPC/EAN/GTIN: 072774022779