M&W balers come in nine models ranging from 4 x 4a to 5 x 6a to fit a wide range of haying operations. The balers feature fewer moving parts, when compared to "like" competitive balers, helping keep maintenance costs minimal. Operation is simple due to fewer moving parts, an open-throat chamber design that reduces the risk of bale starting problems, and a push-button tying mechanism. The bale chamber is nearly fully enclosed, which reduces leaf loss.