Size options for different holes: 5 mm and 1/4 inch drill bits to bore holes of varying sizes. Brass tip for durability: the yellow tip is brass, providing wear resistance. Sharp and long lasting: speed steel 4241 drill bits are sharper and have a longer service life than traditional bits. Clean chip removal in wood and plastic: suitable for wood and plastic, with chips removed automatically through the two side holes. Material and construction: HSS 4241 drill bits designed for reliable performance and extended use. Practical compatibility: optimized for common wood and plastic project work. Performance benefits at a glance: precise hole sizing, durable tip, and efficient chip evacuation for smoother drilling. Use scenarios Woodworking and furniture making: drill accurate pilot holes for screws in solid wood without frequent bit dulling, improving join quality and reducing effort. Plastic enclosures and hobby projects: create clean holes in plastic parts for fast assembly, with minimal heat buildup and consistent results. DIY and model making: for constructing small to medium sized wooden or plastic components, enabling quick prototyping with durable and reliable bits.