The kwb 105000 Bits set includes 5 pieces with sizes 7 mm, 8 mm, 10 mm, and 13 mm, each designed for a 1/4" (6.3 mm) drive screwdriver. Manufactured by kwb, these bits are essential for precise and efficient fastening in various DIY and professional applications. Ideal for use in mechanical and assembly tasks, this set offers reliable performance and compatibility with standard screwdrivers.