This roller fits a Proform 590 QS and many more Icon Health treadmill 24 2/16" OAL Front Drive Roller EUC. This roller was pulled from a working  treadmill. Condition is "Used". Shipped with USPS Parcel Select Ground.

Dimensions are

Overall length  24 3/16"

Roller length 21  1/2"

Roller length   

(Roller edge to inside edge of pulley)