The Proto B329397 9-Piece Metric Round Head Hex Key Set features ball end tips that allow you to tighten or loosen screws at angles up to 25°, providing greater flexibility in tight or awkward workspaces. The round head design ensures a secure grip and reliable torque transfer across all included metric sizes.
Ideal for industrial, MRO, and professional applications, this complete 9-piece metric set delivers the durability and precision craftsmanship that Proto tools are known for, making it a dependable addition to any toolbox or service kit.