The "Neutron Physics" is here, featuring the "NRG Solid" cover, the same cover that made the "Physics" series a mega-hit! Its stable and powerful hook is a must-see! - Brand: Neutron Physics 15P - Cover: NRG Solid Reactive - Core: Atomic Core - RG: 2.480 - ΔRG: 0.053 - Mass Bias: 0.017 - Finish: 2000 Grit Abralon - Color: Black/Orange/Navy - Condition: Medium-Heavy It has been used and shows some scratches, but it's in relatively good condition. It has been used for about 20 games. I am selling it because I changed the weight. Please check the photos for the condition as this is a used item, and please understand that there may be some scratches and dirt. It does not come with the original box, so it will be shipped in a different box. Thank you for looking.