A custom-drilled polyurethane (“urethane”) ball, having custom finger inserts in a ‘’fingertip grip’’ (fingers insert only to first knuckle). Ball has a ‘’pin up’’ layout, with the mass bias indicator also visible. Balls with urethane coverstocks are thought to be more controllable than reactive resin balls.
<a href="//commons.wikimedia.org/wiki/User:RCraig09" title="User:RCraig09">RCraig09</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>