Feature:* Made of HSS, durable and quality ensuring long-term use.* Perfect for car and machine repair where metric threads are specified.* 7pcs include M3, M4, M5, M6, M8, M10, M12 machine screw threaded metric plug . Specification:* Item Type: Machine Screw Metric Threaded Plug* Material: HSS* Color: Gold* Thread Diameter: M3, M4, M5, M6, M8, M10, M12 Length: 4.8cm/1.89", 5.5cm/2.17", 6.4 cm/2.52", 6.6cm/2.6", 7cm/2.76", 7.6cm/2.99", 8cm/3.15"* Quantity: 7pcs Package include: 7 x Tapping Drill Bits Note: 1. The actual colors of the item may vary slightly differ from the pictures shown on website due to many factors such as brightness of your monitor and light brightness.2.Please allow slight manual measurement deviation for the data.