Your spares don't stand a chance against the Black Widow Viz-A-Ball...
This polyester coverstock ball features the ever-popular Gas Mask asymmetric core inside making it the perfect spare ball or ball for dry lanes for any bowler.
Here is what Hammer has to say about Black Widow Viz-A-Ball:
Another exciting release for Hammer is an innovative polyester ball, a Black
Widow Viz-A-Ball… with the Gas Mask core! This exciting ball provides
the hitting power and flare the core offers and takes the Widow polyester
line to the next level with full Black Widow images. Spare balls with a
performance core have been popular for bowlers who want a harder-hitting
spare ball or a ball for extremely dry lanes. Never before has a Viz-A-Ball
featured a high-performance core, and there's no better core or line to
launch such a fantastic product.