These 1/2 drive Hex (H7-H14) Bits are manufactured from chrome vanadium steel for increased durability and strength. The set includes popular hex sizes and is ideal for removing and applying hex fittings. The set is heat treated hardened tempered and fully polished. The knurled sockets provide a secure grip. The set contains H7 8 10 12 & 14 in an EVA foam insert for easy storage.