Multiple Sizes Available: Screwdriver bit sets are available in sizes 25mm, 50mm, 65mm, 70mm, 75mm, 90mm, 100mm, 120mm and 150mm. Reusable, no magnetic damping High Quality Material: Our PH2 non-slip magnet screwdriver bit is made of premium K5 steel, known for its durability and reliability Ultra-Strong Magnetic Positioning: Each non-slip magnet bit is equipped with Powerful magnets to ensure secure grip and positioning of screws, prevent slips and drops, and ensure precise and reliable performance every time Anti-slip kit: Screwdriver Allows screws to be firmly gripped, reducing slips and drops, for precise, efficient and reliable tightening and fastening Wide application: Long screwdriver bit Suitable for high-impact and high-current screwdriving, including impact drills, electric screwdrivers, hand drills, etc.