METRIC • 4, 5, 6, 7, 8, 9, 10, 11, 12 & 13mm SAE • 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2 & 9/16” • Chrome Vanadium Steel for Maximum Strength. • Low profile (Stubby) for tight spaces • Meets or Exceeds DIN Standards