1. Material: These screwdriver bits are made from high-quality alloy steel with a hardness of up to 62 HRC, providing durable performance and reliability under demanding conditions. 2. Magnetic: Features strong magnetism that securely holds screws in place, reducing slippage and improving efficiency during use. 3. Nonslip Design: Precision-engineered with fine teeth and serrated blades to ensure a secure fit, prevent cam-out, and enhance accuracy and control. 4. Versatility: Compatible with various power tools including impact drivers, electric screwdrivers, and drills, making them suitable for a wide range of applications from household repairs to professional tasks. 5. Product Size: Available in multiple lengths: 1 inch (25 mm), 2 inch (50 mm), 2.6 inch (65 mm), 2.8 inch (70 mm), 3.5 inch (90 mm), and 6 inch (150 mm). Compact and easy to store or carry. Product Name: Impact Screwdriver Bit Set Size: 1in/25mm, 2in/50mm, 2.6in/65mm, 2.8in/70mm, 3.5in/90mm, 6in/150mm Shank: 1/4 inch (6.35 mm) diameter Color: As shown Material: Alloy Steel Package Contents: 10 x Drill Bits (2 pcs each of 25mm, 50mm, 65mm, 70mm, 90mm) 1 x 150mm Drill Bit Note: Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.