Experience precision with the original manufacturer's hex key set, engineered to exact dimensional tolerances for a perfect fit. Each key is heat-treated from high-strength alloy steel to ensure maximum strength and resistance to rotational distortion.

• Opens to 270° to provide enhanced torque and improved access in tight spaces
• Constructed from high-strength alloy steel for long-lasting durability
• Heat-treated to prevent rotational distortion and increase tool strength
• Features a dual-material, color-coded case for quick size identification
• Complete 9-piece SAE set includes: 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, and 1/4 in.