- Made in the USA - Quality and Availability
- From AllenÂ®, the Original Manufacturer of the Hex Key
- Heat Treated, Tempered Alloy Steel Provides High Strength and Resistance to Rotational Distortion
- All Hex Keys Are Precision Formed to Exact Dimensional Tolerances for Precise Fit
- Nickel-Chrome-Moly Alloy Steel Provides Outstanding Torque Strength
- Hi-VIS Color for Easy Identification
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