11PCS 1/4” DRIVE SOCKET SET. Versatile Size Range: Includes 11 sizes: 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, and 14mm. With a selection of commonly used sizes, this set is perfect for a variety of applications including automotive repair, electronics, and household fixtures.