The numbers on the Trail Blazer Solid are 2

Works on all ball types

Outer mesh pocket on back for easy access to essential items

which is a good match for drier house shots

The Polaris features a weight block similar to the one used in the Aero series but Ebonite has added a disc to the bottom to help produce more ball motion

KR Strikeforce USA Spare Bowling Ball Weight:10 lbs. The numbers on the TrailComplete your lineup with a sensational spare ball! This ball is perfect for any lane condition and any bowler! This is a custom bowling ball made to order. It can take 1 4 weeks to create, cure and ship the ball. Color: Red White Blue All colors do vary somewhat from the picture shown Coverstock: Plastic Ball Finish: Rubbing and Finishing Compound Single Buff Recommended Lane Condition: Any A few tiny pit holes in the cover stock of the ball are