Set Includes: (12) 5-Lobe Tamper-Resistant Star Plus Bit Sockets: ATD-13700 - 8IPR 1/4" Drive; ATD-13701 - 10IPR 1/4" Drive; ATD-13702 - 15IPR 1/4" Drive; ATD-13703 - 20IPR 1/4" Drive; ATD-13704 - 25IPR 1/4" Drive; ATD-13705 - 27IPR 1/4" Drive; ATD-13706 - 30IPR 1/4" Drive; ATD-13707 - 40IPR 3/8" Drive; ATD-13708 - 45IPR 3/8" Drive; ATD-13709 - 50IPR 3/8" Drive; ATD-13710 - 55IPR 3/8" Drive; ATD-13711 - 60IPR 1/2" Drive