Experience precision with the original manufacturer of hex keys, featuring tools formed to exact dimensional tolerances for a perfect fit. Each key is heat-treated from high-strength alloy steel to provide maximum strength and resistance to rotational distortion.

• Precision-formed to exact dimensional tolerances for a precise fit
• Heat-treated high-strength alloy steel resists rotational distortion
• Fold-up design opens to 270° for improved torque and better access
• Dual-material color-coded case for easy identification
• Comprehensive 9-piece SAE set: 0.050, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16 in.