This box of 100 Concrete Frame Screws are TORX compatible and feature a high-low thread design, making them an excellent choice for a variety of heavy-duty applications. Measuring 7.5 x 152mm, these screws are zinc yellow passivated (ZYP) for increased durability and corrosion resistance. Theyre designed to offer superior holding power in both concrete and masonry, making them perfect for securing frames, partitions, or any other fixtures directly to concrete surfaces.