Back 2 Back Jacks is an insert set in 2001 Donruss Elite. This 45-card set features game used batch chips from some of baseball’s best hitters, both former and current players included. The is highlighted by bat pieces from Babe Ruth, Lou Gehrig, and Ty Cobb. Cards 1-30 feature a single player, while cards numbered 31-45 feature two players. 4 of the cards were packed out as exchange cards, redeemable until May 1, 2003.