This dryer drum belt has five ridges, 93-3/8 inches in length, and 3/8 of an inch wide. It is flat, black in color, and is made entirely of rubber. The belt helps rotate the drum. If the drum does not rotate and you can still hear the motor running, the belt may have broken and will need to be replaced. This is a genuine OEM part. Please remember to disconnect the power to your dryer before starting the repair.