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. Magnetic: Features strong magnetic tips that securely hold screws in place, reducing slippage and improving efficiency during use. Nonslip: Designed with precision-engineered fine teeth and serrated edges to ensure a secure fit, prevent cam-out, and deliver accurate, efficient fastening. Versatility: Compatible with a wide range of tools including impact drivers, electric screwdrivers, and drills, making them suitable for various applications from household repairs to professional tasks. 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 design allows for easy storage and portability. 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: The package includes only the items listed above. Other accessories are not included. Slight color variations may occur due to lighting and display differences. Measurement error is +/- 1-3 cm.