Feature: 1. Socket Size: This electric wrench socket has 20 socket and the size are following, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 27mm, 30mm, 32mm. 2. Rust and Corrosion Protection: This electric wrench socket has black electrophoretic oxide coating provides maximum protection against rust and corrosion. 3. Suitable Machine: Electric hex wrench socket kit is suitable for electric drill adapter, impact adapter, screwdriver electric drill sleeve adapter, etc. 4. Chrome Vanadium Steel: The wrench socket kit is made of chromium vanadium steel, it has high strength and longer use life. 5. Practical and Stable: The wrench socket kit is practical and stable in use, and can withstand higher torsion impact tools. Specification: Item Type: Electric Wrench Socket Set Material: Chrome vanadium steel Socket Size: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 27mm, 30mm, 32 mm. Package List: 20 x Wrench Socket