Descriptions: The Columbia 300 Eruption comes in a 2000 grit Abralon sanding finished with a factory Polish. The Veneer that was so popular on the Resurgence returns in the form of the New Era Skid Flip. The Symmetrical core on the Eruption also makes a return from the Resurgence, boasting a Low RG with a fantastic backend finish. Blow up the pins with the Columbia 300 Eruption! FEATURES: Color: Electric Blue/Ultra Violet All colors do vary somewhat from the picture shown. Core: Resurgence Symmetric Veneer: New Era Skid Flip Surface: 800 Abranet, 1000, 2000 Abralon, Factory Polish A few tiny pit holes in the cover stock of the ball are normal RG: 2.47 Diff:.035 Recommended Lane Condition: Medium-Medium Dry Oil Description: The Eruption features the same low RG, medium Differential Resurgence core that has been a part of the successful Burst and Outburst this past season and even more historically for Columbia 300, it was the engine of the extremely successful Resurgence. We've wrapped the Resurgence core in a new variation of the New Era veneer that was also popular on the Resurgence and Burst, it's called New Era Skid Flip. We started with the same base material, however, the pearl additive we used causes the ball to skid further and recover harder down lane. While this cover is weaker in oil, it is quite aggressive when it sees friction and really compliments the low RG Resurgence core. We're pouring New Era Skid Flip in a combination of two gorgeous colors, Electric Blue and Ultra Violet with bright green logos. The finishing preparation for the Eruption is a four stage process including our factory polish. We start with 800 Grit Abranet, followed by one stage of 1000 Abralon and a stage at 2000 Abralon. Leaving the ball at 2000 grit before polishing it makes the ball smooth enough to easily clear the front part of the lane and the texture under the polish helps it to not hydroplane through the hook spot and produce fantastic back end.