Penn Regular Duty Tennis Balls (Case 24X) Size:OS Pentagonal shape digs into ball

Pentagonal shape digs into ball for greater spin potential

Also works well for loading or retrieving from a ball machine

Keeps everything in its place and keeps courts looking neat and inviting

There are two plates to hang the board and protective plastic coverings for the plates

Penn Regular Duty Tennis Balls (Case 24X) Size:OS Pentagonal shape digs into ballPenn Championship is Americas #1 Selling Tennis Ball and represents the standard by which all other tennis balls are measured. It features a controlled fiber release for consistent nap, natural rubber for consistent feel and reduced shock, and interlocked wool fiber for longer wear. Penn Championship is the Official Ball of USTA Leagues. It is USTA and ITF approved and is available in extra duty felt or regular duty felt The Championship Line provides