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Brunswick Knock Out Black and Blue

Photo and specs courtesy of bowwwl.com. Reproduced with credit to the maker.

How it moves

Foul lineArrows · 15 ft41 ft · board 5.55.3° entry
Arcing turn (symmetric core). Dotted is skid, then the turn, then the roll into the pocket. Estimated from the coverstock, finish, core, and differential for a right-handed bowler with medium revs on a house shot. Lane conditions, speed, and layout move all of this.
Brunswick

Knock Out Black and Blue

Hook potential8 (est.)8 of 10, estimated

How much the ball wants to hook, 1 (straight, a spare ball) to 10 (the strongest oil-eaters). The maker publishes no number for this ball, so this is estimated from the coverstock, core, finish, and differential.

Coverstock
Savvy Hook 3.5 Solid
Reactive solid
Core
Melee Low RG
Symmetric
Factory finish
500/2000 Siaair Micro Pad
Color
Not listed
Released
2022-01-28
USBC
Approved

Weights and specs

WeightRGDifferentialInt. diff
12 lb2.600.040—
13 lb2.570.040—
14 lb2.500.050—
15 lb2.490.050—
16 lb2.480.050—

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
500/2000 Siaair Micro Pad. Sanded then smoothed (1500 to 3000 grit): enough tooth for oil, enough gloss to get down the lane. Most box finishes. Surface changes over games, and a pro shop can take any ball either way with a pad.

Balls like this

Same coverstock and core type; the closest company for this ball in a bag.