USAGE: These drill chuck screwdriver adapters convert an electric screwdriver into a drill or grinder, enabling quick switching during use to improve efficiency. UNIVERSAL HEX SHANK: Features a universal hexagonal shank for easy insertion into most electric screwdrivers, ensuring simple and fast attachment. MATERIAL: Constructed from steel for durability, corrosion resistance, and wear resistance. WIDE RANGE OF APPLICATION: Compatible with various drill bits and electric screwdrivers; suitable for use in automotive, garage, warehouse, office, and home environments. Color: Black + Silver Material: Steel Package Contents: 1 × Hex handle 0.3–3.6 mm black chuck 1 × Hex handle 0.3–6.5 mm silver chuck 1 × Hex handle 0.3–6.5 mm black chuck 1 × Hex handle 0.6–8 mm black chuck Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.