The Bertini Full Size Bed Metal Conversion Kit allows you to get more use out of any of the Bertini 4-in-1 Cribs, including the Pembrooke, the Saybrook, and the Truly Scrumtious by Heidi Klum 4-in-1 Crib. The bed rails quickly and easily convert the crib into a full-size bed, allowing use of the crib's headboard and footboard. Converting to a 'big kid's bed' with a bed that your toddler is already familiar with will give that extra security when transitioning. Cribs each sold separately.