Using only the best PE material and our advanced single piece design, this ball will withstand hours of the most aggressive play. The X-40 balls deliver a superb flight path thanks to the precision of our machine drilled holes. Perfectly weighted and sized, these balls will certainly impress anyone on the court! OFFICIAL SIZE AND WEIGHT: These official competition-grade pickleballs are 26 grams in weight with a 74mm diameter to conform to official USA Pickleball standards PRECISION DESIGN: The balls are constructed with 40 precisely machine drilled holes for a balanced flight pattern and tight, reliable spin PREMIUM DURABILITY: The no-seam, one-piece construction ensures a stronger, longer lasting ball that resists dents and cracking USA PICKLEBALL APPROVED: The X-40 is approved for outdoor tournament play by USA Pickleball and was selected as the official ball for the US Open Pickleball Championships 12 PACK: The bulk pack includes (12) X-40 pickleballs so you can be fully stocked up.