The Nitro Lady goes the distance for you on the links. Her Tungsten Ti core and scientifically formulated cover explodes off the club face for extra long distance. Features include: Pack includes six sleeves (18 golf balls) Tungsten Ti core and scientifically formulated cover explodes off the club face for extra long distance Ti 432 pattern provides for a more consistent ball flight Softer Titanium metal mix cover and Tungsten core make for better feel on and around the green Cut resistant cover Manufactured and tested to conform to USGA and R&A regulations