This DoctorSpark hex stud adapter is the perfect solution to convert a 10mm female insert to an 8mm male stud. Made of high-quality steel and finished with zinc plating, this adapter is durable and will resist corrosion. The flat head and hexagon shape make it easy to tighten with a spanner, which has a width of 13mm. The total height of the adapter is 23mm, with a hexagon height of 15mm. The male stud length is 6mm, and the female insert length is 9mm. This adapter has a coarse metric thread system of measurement, with thread pitch sizes of M8 - 1.25mm and M10 - 1.5mm. The thread rotation is clockwise, and it's manufactured in the United Kingdom. It provides a strong, secure connection.