Used 15 Lb KNOCK OUT BLACK BLUE Bowling Ball Thrown for 26 games. Please take note of the small crack in the bridge. This can be easily repaired when having the ball plugged and redrilled to fit your hand. Drilled RH SPAN - 4 1/4" cut to cut (with IT thumb in ball) NEVER Resurfaced NEVER Plugged Pin - 3-4” Comes in original box. DISCOUNTS AVAILABLE WHEN BUYING MULTIPLE BALLS. Message me with any questions. This Knock Out Black and Blue uses Savvy Hook 3.5 Solid, a slightly stronger cover and motion on the lane. In addition to the stronger cover, we’ve added sparkle to help it bite through oil, and it uses a stronger finishing process. The Knock Out series is also a perfect complement to the Melee Jab balls, as it uses the same core but a stronger cover and finish. The Knock Out Black and Blue will be another must-have motion in the bag. LEVEL High PART NUMBER 60-106656-93X COLOR Black / Blue CORE Melee COVERSTOCK Savvy Hook 3.5 Solid COVER TYPE Solid Reactive FINISH 500, 2000 Siaair Micro Pad WEIGHTS 16-12 lbs. RG 2.487 (15 lb.) DIFF 0.050 (15 lb.)