In sports, we are always told to hustle well Roto Grip has a ball line that will do just that on the lanes. The Roto Grip Hustle M M was designed to add variety to the Hustle line of bowling balls. This ball takes a medium RG core and medium differential to create a ball that will offer good mid-lane motion and continuation. The VTC Pearl Reactive Coverstock was created to offer a slightly different reaction. With the Versatile Traction Control coverstock finished with a Reacta Gloss finish this ball offers the right amount of power and control!