JTHK-10 T-Handle Hex Key Set, 10 Pcs., Imperial/Torx®PVC grip provides comfort and allows increased torque S2 alloy steel hardened to HRC58 62 for maximum strength and endurance Flat nose design for highest torque on the toughest fasteners Colour coded to indicate S. A. E., Metric, or Torx sizes Manganese phosphate finish resists corrosion No. of Keys: 10 Drive Type: Metric & Imperial Torx Manufacturer Part Number: 775109 Includes: 3 32", 7 64", 1 8", 9 64", 5 32", 3 16", 7 32", 1 4", 5 16", 3 8"