The thread repair set is suitable for repairing damaged threads and is suitable for engine repair and other automotive applications. Features: Made of high-quality steel material, sturdy and durable in use. Repair damaged threads. Perfect for restoring damaged lines, suitable for engine repair and other automotive. Applications for steel, cast iron and aluminum. Can be used in daily repair, car repair, drilling machine, etc. With package box, convenient for storing and transporting, you can easy and fast to collect and take off. Specifications: Material: Steel Tap Specification: 25Pcs: M5 X 1.0, M6 X 1.0, M-8 X 1.25 15Pcs: M-10 X 1.0, M-10 X 1.25, M-10 X 1.5, M12 X 1.25, M12 X 1.5, M12 X 1.75, M14 X 1.5 (optional) Package Weight: M5 X 1.0: 200g / 7.05ounces M6 X 1.0: 300g / 10.58ounces M-8 X 1.25: 340g / 11.99ounces M-10 X 1.0, M-10 X 1.25, M-10 X 1.5: 460g / 16.23ounces M12 X 1.25, M12 X 1.5, M12 X 1.75: 490g / 17.28ounces M14 X 1.5: 500g / 17.64ounces Package Size: 200 * 110 * 40mm / 7.87 * 4.33 * 1.57in Packing List: 1 * Drill Bit 1 * Tap 1 * Break Pin Tool 1 * Hexagon Key 1 * Installation Tool 10 * Thread Inserts 1 * Lastics Box