High Performance： Crafted from S2 alloy steel for strength, ensuring effective performance for electric drills and industrial tasks. Extended Length： Each bit measures 300mm, providing enhanced for hard-to-access screws, ideal for various applications. Versatile Compatibility： Designed with a 1/4 inch hex shank, these bits fit most electric drills, enhancing your tool collection. Precision Sizes： Includes PH1 and PH2 bits in multiple diameters, diverse needs for and maintenance projects. Easy to Use： Simply install in drill for direct use, making your and professional tasks simpler and more efficient., Manufacturer: ANGGREK