Product Specifications:  Set contains each of the following 

1/4 ~ 9/32 (6.35~7.14mm) - HV

9/32 ~ 5/16" (7.14~7.94mm) - HW

5/16 ~ 11/32" (7.94~8.73mm) - HZ

11/32 ~ 3/8" (8.73~9.52mm) - HY

3/8 ~ 13/32 (9.52~10.32mm) - H1

13/32 ~ 7/16" (10.32~11.11mm) - H2

7/16 ~ 15/32" (11.11~11.91mm) - H3

15/32 - 17/32" (11.9- 13.5mm) - H4

17/32 - 19/32" (13.5 - 15mm) - H5

19/32 - 21/32" (15 - 16.6mm) - H6

21/32 - 23/32" (16.6 - 18.2mm) - H7

23/32 - 25/32" (18.2 - 19.8mm) - H8

25/32 - 27/32 (19.8 - 21.4mm) - H9

27/32" to 15/16" ( 21.4 - 23.8mm) H10

15/16" to1.1/16 " ( 23.8 - 27 mm) H11