Check the listing for details. Hammer Purple Pearl Urethane. Color: Purple Pearl, Condition: New. Listed at 172.44 USD. It's back... The most popular and powerful urethane ball of all time! FCC Rating (14.5) - The overall strength of the Black Urethane is perfect for medium to light oil patterns. This throwback will really excel on shorter oil patterns. FINISH (9) - The 500, 1000, 2000 Siaair Micro Pad finish of the Purple Pearl Urethane provides more length with a smooth arc. CORE (2) - Our new LED core design is a modern version of the traditional light bulb shape that was so popular back in the day. COVER (3.5) - Our Urethane cover is the main ingredient in this masterpiece. Unlike modern covers that produce a violent reaction at the breakpoint, this proven staple is all about giving the user ultimate control of the entire lane. Hammer Purple Pearl Urethane The immediate success of our real, thick shelled Black Urethane had our fans begging for more! To satisfy their desires, we have developed the perfect pearlized, thick shelled coverstock to compliment the Black Urethane. Old school technology with new school hitting power. Because nothing hits like a Hammer.