Precision Impact Slugs: Heavy Weighted 15oz Baseballs for Hitting; with 1-Year Warranty (6-Pack)saFeatures of Precision Impact Slugs: Heavy Weighted 15oz Baseballs for Hitting; with 1-Year Warranty (6-Pack) ATTENTION COACHES AND PARENTS: Take your kid's team to the next level with the latest and greatest in "training baseballs". Precision Impact Sl..