900 Global Onyx Polyester specs

The 900 Global Onyx Polyester is a polyester (plastic) ball with the 3 Piece core. Here are its published specs, how they compare with the other current balls in our table, and what the numbers mean on the lane.

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Coverstock	Clear Poly
Cover type	Polyester
Core (weight block)	3 Piece
Core type	Symmetric
RG	2.680
Differential	0.006
Factory finish	3500 Grit Polished
Flare potential (maker)	Low
Maker's category	600
Color	Onyx Clear
Release date (maker)	10/18/24

Numbers as 900 Global publishes them, checked 21 October 2026. 900 Global doesn't say which ball weight these numbers are for. Drilling changes how a ball behaves, so a pro shop's layout matters as much as these numbers.

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What the numbers mean

Polyester cover. Polyester (plastic) is the cover used for spare balls and house balls: it grips the lane least, so the ball goes nearly straight. See our plastic spare ball review.

Symmetric core. Storm says symmetric balls have "RG values consistent across all axes" and a smooth, predictable roll.

USBC allows an RG from 2.447 to 2.813 inches and a differential of at most 0.060 inches (Equipment Specifications Manual, March 2026). Our ball spec table lists every current ball we track, and who makes bowling balls covers which company owns 900 Global.

Balls with similar numbers

Same cover type, closest RG and differential in our table:

Storm Ice Storm Ocean Blue-White: RG 2.680, differential 0.006
Storm Ice Storm Teal-Silver-Graphite: RG 2.680, differential 0.006
Roto Grip Cosmos: RG 2.680, differential 0.006
Roto Grip RG Jester Clear Polyester: RG 2.690, differential 0.006

Sources: 900 Global product page; Storm, "Inside The Bowling Ball"; Storm, "The Coverstock"; USBC Equipment Specifications Manual.