Set Includes: (13) Metric Hex Bit Sockets: ATD-205 - 2mm 1/4" Drive; ATD-206 - 2.5mm 1/4" Drive; ATD-207 - 3mm 1/4" Drive; ATD-208 - 4mm 1/4" Drive; ATD-209 - 5mm 1/4" Drive; ATD-210 - 5.5mm 1/4" Drive; ATD-211 - 6mm 1/4" Drive; ATD-193 - 7mm 3/8" Drive; ATD-124556 - 8mm 3/8" Drive; ATD-212 - 9mm 3/8" Drive; ATD-124557 - 10mm 3/8" Drive; ATD-213 - 12mm 3/8" Drive; ATD-214 - 14mm 1/2" Drive