This is a 15lb Roto Grip HUSTLE B/N/B Bowling Ball, featuring a Blue/Navy/Black color scheme with a Reactive Resin coverstock and Symmetrical core. It has a RG of 2.53 and a 2000 grit Abralon finish. This mid-performance ball is designed for ten-pin bowling and is made in the United States. It comes undrilled and includes a 1-year manufacturer warranty.