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Pyramid Fortress Endgame

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

How it moves

Foul lineArrows · 15 ft42 ft · board 3.55.7° entry
Hockey-stick turn (asymmetric 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.
Pyramid

Fortress Endgame

Hook potential8.5 (est.)8.5 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
GPS Navigational Solid ATX-XX
Reactive solid
Core
SG 19.5 AI
Asymmetric
Factory finish
2000 Abralon
Color
Not listed
Released
2024-11-27
USBC
Approved 2025-01-15

Weights and specs

WeightRGDifferentialInt. diff
15 lb2.470.0510.023

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
2000 Abralon. 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.

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