A round bale wrapping mechanism that employs a pivoting carrier for two wrapping material rolls, one a stored roll and the other the working roll being dispensed. When the storage roll is to be employed, it is pivoted into contact with the material being dispensed from the working roll and pulled through the threading components of the wrapper. The storage roll thus becomes the working roll and a new storage roll may be installed in place of the empty storage roll (previously the working roll).