For sale is a Virtual Gravity Nano, one or Storm's most successful balls.  It has about 60 games of use (on synthetics) and is in good shape. 

15 lbs, single RH drill, set up with finger grips and thumb slug.  Span is about 4.5";  3.5" pin, which is located about 1.5" above and slightly right of ring. with CG kicked out about 2" right of thumb and with a MOtion hole.   

Let me know if you want pics.  Great track record here on BR for many years (see profile).  $40 plus Shipping. Thanks!