644 Standard Fold-Up Jack-Key SetResists rotational distortion. All hex keys are precision formed to exact tolerances for precise fit. Rotates to 270 degrees to a firm stop for better torquing and access. Nickel-Chrome-Moly alloy steel provides outstanding torque strength. Finish: Black Oxide; Handle Length: 3 3/4 in; Handle Material: Alloy Steel; Material: Steel; Measuring System: Inch; Packing Type: Uncarded; Quantity: 9 per fold-up; Tip Size: 5/64 in, 3/32 in, 7/64 in, 1/8 in, 9/64 in, 5/32 in, 3/16 in, 7/32 in, 1/4 in; Tip Type: Hex; Weight: 0.44 lb.