13-piece nitride-coated drill bit set - Extended life: the nitride-coated high speed steel HSS bits have a service life about six times that of a standard drill bit. - Faster penetration with less effort: the nitride coating reduces friction and helps bits cut more efficiently. - Quick bit changes: the bits use a 1/4 inch hex shank designed for cordless screwdrivers, enabling fast tool changes. - Broad compatibility: standard 1/4" hex shank kit is suitable for cordless screwdrivers, drill bits, and standard drill chucks. - Material and durability: coated drill bits provide longer service life and improved wear resistance. - Versatile materials: suitable for drilling into steel, wood, plastic, and other common materials. - Cordless screwdriver use: compatible with cordless screwdrivers; 1/4" hex shank supports rapid bit changes. Use scenarios - Home furniture assembly and cabinetry installation in wood: drill clean, accurate holes with quick bit changes to speed up project completion. - Metal work or framing: drilling into steel brackets or metal studs where durable, long-lasting bits are advantageous. - General repairs and plastic work: drill through plastic components or light plastics for repairs or mounting tasks with reliable performance.