USAGE: These drill chuck screwdriver adapters convert an electric screwdriver into a drill or grinder, enabling quick switching during use to save time and improve efficiency. UNIVERSAL HEX SHANK: The adapter features a universal hexagonal shank that fits securely into most electric screwdrivers for easy installation and removal. MATERIAL: Made of durable steel, rust-resistant and wear-resistant for long service life. 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: Actual color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.