The Set 3 (Cat.No. #N805) contains 24 kinds of indexed adapters (DNA Adapter from 96-01 to 96-24). The Set 4 (Cat.No. #N806) contains 24 kinds of indexed adapters (DNA Adapter from 96-25 to 96-48); The Set 5 (Cat.No. #N807) contains 24 kinds of indexed adapters (DNA Adapter from 96-49 to 96-72); The Set 6 (Cat.No. #N808) contains 24 kinds of indexed adapters (DNA Adapter from 96-73 to 96-96).