Coverstock: LowKoil - Carbide / Particle The Brunswick International Series is designed to match-up to typically more difficult International lane conditions and is available only through International distributors. The International Danger Zone IV combines two of Brunswick’s most successful and proven technologies, Carbide/Particle coverstock technology and Mushroom core technology from the Quantum series. The Danger Zone IV combines a Low-Rg/High-flare Quantum shaped core with LowKoil Carbide coverstock. LowKoil is Brunswick’s latest Low-Load particle coverstock designed to smooth over/under reactions and improve traction in the oil. Designed for medium to heavy oil, the Danger Zone IV tractions through amounts of oil that cause Reactive coverstock balls to slip. This ability to traction enables the Danger Zone IV to smooth out over/under reactions and to create hooking action in heavier amounts of oil that are unplayable with Reactive coverstock balls.
| Line | Brunswick |
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| Color | Purple |
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| Coverstock | Particle Pearl |
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| Core | 2-piece Asymmetrical |
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| RG | 2.559 |
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| Differential | 0.041 |
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| Intermediate Diff | n/a |
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| Factory finish | Polished |
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| Weights | 11 thru 16lbs |
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| Cleared USBC | Yes |
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