Roto Grip UFO ALERT
Roto Grip

UFO ALERT

✓ USBC Approved ✓ PBA Certified Tournament restrictions Discontinued

USBC approved 2021-03-09

Medium oil estimated

Coverstock
eTrax Pearl (pearl)
Core
ET
Factory finish
1500 Grit Polished
Flare potential
High
Color
Purple Solid/Emerald/Teal
List price
No manufacturer price found

Manufacturer product page ↗

Specs by weight

Weight RG Differential
16lb 2.520 0.054
15lb 2.520 0.054
14lb 2.520 0.054
13lb 2.570 0.032
12lb 2.590

About this ball

Our obsession with helping players of all ages and styles conquer various lane conditions while abiding to forthcoming governing rules, led to the development and creation of the asymmetrical E.T.™ Core (Equalizer Technology Core) which features built in cavities in order to increase weight displacement after drilling without a balance hole to increase overall ball motion.Engineered For - Medium to Medium-Heavy Oil Conditions ET CORE: E.T.™ Core = Equalizer Technology Core. This space aged creation was developed with built in cavities at the base of the inner block to emulate the use on an extra hole depending on how you drill it since balance holes are no longer legal in sanctioned competition. The premise of the lower RG and high differential naturally translates to more flare potential, but, add in these “equalizer cavities” and you have yourself built in increased dynamics after drilling.eTrax™ Coverstock: Our purest form of reactive material to date, the Enhanced Traction (eTrax) coverstock sets the standard as the material to which all other materials are compared and tested. Formulated to provide the “true reactive” response on a variety of conditions by easily clearing the front of the lane while aggressively responding to friction down lane, the eTrax material flexes its resilience and durability day in and day out.

Tournament legality

Ineligible for USBC national tournaments (no slow oil allowed).

Eligible for USBC national tournaments only when 78D slow-oil rules are in effect.

Similar reaction shapes

Closest balls by RG / Differential / Int. Diff — any brand.