Features Includes 5-lobe tamper-resistant star plus bit sockets. Bits are made from S2 steel to meet or exceed torque specifications. Sockets are made from heat treated chrome vanadium steel for strength and durability. Item Weight - 3.000 lbs. Includes: ( 12) 5-Lobe Tamper-Resistant Star Plus Bit Sockets: 8IPR 1/4 in. Drive ( ATD-13700). 10IPR 1/4 in. Drive ( ATD-13701). 15IPR 1/4 in. Drive ( ATD-13702). 20IPR 1/4 in. Drive ( ATD-13703). 25IPR 1/4 in. Drive ( ATD-13704). 27IPR 1/4 in. Drive ( ATD-13705). 30IPR 1/4 in. Drive ( ATD-13706). 40IPR 3/8 in. Drive ( ATD-13707). 45IPR 3/8 in. Drive ( ATD-13708). 50IPR 3/8 in. Drive ( ATD-13709). 55IPR 3/8 in. Drive ( ATD-13710). 60IPR 1/2 in. Drive ( ATD-13711).