Brunswick TZone - Deep Space Polyester Bowling Ball The Brunswick TZone line features bright colors, outstanding durability, and pinpoint accuracy for all levels of bowlers. This ball Glows Under Black Light! Polyester - Great for first time ball purchasers or picking up spares. Accurate - Low hook potential, typically a spare ball or useful on extremely dry conditions. Balls with higher numbers will be the straightest. Reaction Shape Strength: 99 - The higher the number the stronger the reaction shape – with 1 being the least and 100 the most. Product Info Core Specs Downloads LEVEL Polyester PART NUMBER 60-105746-93X COLOR(S) Deep Space CORE TZone Bullet (Symmetric) COVERSTOCK Polyester COVER TYPE Polyester FINISH Crown Factory Polish RG 2.696 DIFF 0.019 BALL MOTION Straight LANE CONDITION Light Oil and Spare Shooting WEIGHTS 6, 8-15 lbs RELEASE DATE 07/07/15 WARRANTY Brunswick 1 Year Limited Warranty Brunswick TZone Cores The TZone series features the TZone Bullet core shape for 12-15 lb. models. Lightweight generic cores are used for the 9-11 lb. and 6-8 lb. models respectively. Brunswick TZone - Tech Sheet