Each box of 2017 Topps® High Tek™ Baseball will include: 40 Total Cards 5 Guaranteed Pattern Parallel Cards  2 On-Card Autograph Cards 3 or More Sequentially Numbered Base/Insert Cards** A Dazzling Array of Base Card Variations and Diffractors Each 12-box case will also guarantee 1 SpecTEKular Base Card Diffractor sequentially numbered to 15 or less. Look for Kris Bryant, Bryce Harper, Mike Trout, and a host of top-performing rookies!