1/4 inch extension bit magnetic holder. Compatible with electric screwdrivers, hand screwdrivers, electric drills, and other tools. Torx head sizes: T8, T10, T15, T20, T25, T27, T30, T35, T40. Hex bit sizes: 5/64 in., 3/32 in., 7/64 in., 1/8 in., 9/64 in., 5/32 in. Made from CR-V steel with high-frequency quenching for high hardness, high torque, and long service life. Precision tips reduce damage to screw heads. Magnetic bit holder for secure bit retention. 32-piece set includes magnetic screwdriver bits, Torx and hex bits, and bit holder. Packaged in a durable plastic case for easy storage and portability. Suitable for various household and professional applications. Note: Measurements are manually taken; please allow 1-2 cm error. Color may vary slightly due to lighting and screen settings. Actual product may differ slightly from images.