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Ebonite Challenge

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

How it moves

Foul lineArrows · 15 ft43 ft · board 3.56.1° 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.
Ebonite

Challenge

Discontinued
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
RCS Reactive™
Reactive solid
Core
All new AXS core design focuses on bringing the best we can design in core dynam
Asymmetric
Factory finish
1500 Abralon®
Color
Silver / Purple / Green
Released
Not listed
USBC
Approved 2012-09-01

Weights and specs

WeightRGDifferentialInt. diff
14 lb2.540.0540.017
15 lb2.510.0570.017
16 lb2.520.0500.017

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
1500 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.

Balls like this

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