Description: Add a touch of personality and practicality to your tennis balls with BallTrace's double letter stencils packs! These versatile stencils offer a fast and efficient way to mark your tennis balls with two letters at once. From personalizing your practice balls to easily identifying yours during matches, BallTrace's stencils clip onto their BallTrace marker (sold separately) for effortless application. Made with high-quality, eco-conscious materials, these stencils are a perfect addition to any tennis player's bag.