The Astro Pneumatic 7412 - 12 -Piece. 1/4-Inch Dr. 6 Pt. Metric Flex Socket Set features surface drive technology that grips fasteners on the flats for greater torque transmission without rounding. Flexible joints make it versatile for hard to reach fasteners. Full polish finish for a crisp look. Set includes: 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm Flex Sockets.