• Bosch 9-Piece Allen Key Set Versatile, multi-purpose use thanks to high-quality, ball cap allen wrenches Premium S2 steel and high-gloss nickel-plated finish for durability and corrosion protection Ball tip facilitates 30-degree offset for proper positioning of allen wrenches Long-sleeve wrenches provide higher torque and greater accessibility, especially at tight points Latch lock clip for practical storage Storage clip with angled button for quick and easy removal of allen wrenches Material type S2 Steel Surface Matte chrome-plated Hardness allen wrenches 52-57 HRC