The 5-pc 8mm Socket Set, No. 6535, from CTA Tools includes stubby, standard, deep, flex, and magnetic impact sockets all in a 1/4" drive. The sockets are manufactured using chrome molybdenum for durability and are coated with manganese phosphate to withstand corrosion. A knurled, non-slip ring on all but the two universal/u-joint sockets, offers maximum grip for users.