Attributes:* Socket Size: 10mm/12mm, 17mm/19mm, 16mm/18mm, 16mm, 21mm* Thickness: 1.2mm / 0.047"; 1mm / 0.04"* Bar Size: 5mm x 120mm / 0.2" x 4.72" (D*L)What Is Included:* 1 Set (6 Piece) x Spark Plug Wrench* 2 Pieces x Round BarApplications & Features:--- Application for maintaining a vehicle's ignition system and ensuring that spark plugs are properly installed and removed without causing damage or improper sealing.--- Designed specifically for spark plug disassembly, our manual socket wrench provides easy installation, offering convenience and time-saving benefits.--- The fully hollow internal design solves the issue of accommodating excessively long screws, providing efficient functionality.--- The leverage hole allows for the insertion of a bar, reducing effort during spark plug disassembly.