Made from specially formulated steel, these ballend hex keys are more efficient that a regular hex blade because they allow quick insertion from a variety of angles into hard-to-reach places. Work great in wide open spaces as well. Corrosion resistant and include organizing case that can be used for added torque. Kit Includes:050"1/16"5/64"3/32"7/64"1/8"9/64"5/32"3/16"7/32"1/4"5/16"