Meets or exceeds ANSI standards Round head ratchet with 40 tooth gear, 5 in (13 cm) extension bar, 6 point sockets: 10 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 19 mm, 21 mm, 22 mm, 24 mm 1/2 in drive, Dial design, Directional mechanism, Knurled speed spinner, PVC grip, Universal joint Chrome vanadium steel make for maximum strength