GREENER Hex Key Wrench Set, Hex Screwdriver, Hex Key, Hexagonal Inner Hexagon Rainbow Extended

Manufactured under German quality inspection standards ensuring superior tool quality.

Recognized in domestic and international hardware tool rankings.

Endorsed by multiple industrial tool quality supervision centers and research institutes.

High-strength alloy steel with high-temperature quenching and hardening treatment.

Overall hardness up to HRC 62 for excellent toughness and resistance to deformation and chipping.

Made from hard alloy steel material with integrated heat treatment for enhanced torque and durability.

90° right-angle bending process with one-time forming to prevent rebound and maintain shape after long-term use.

Hexagon inner hex keys with both flat head and ball head types.

Deep hole nut design for larger force area and multi-angle usage, allowing increased torque application.

Rainbow-colored injection molded handles for easy identification and aesthetic appeal.