Abstract: Disclosed is a high speed coaxial contact and signal transmission element which comprises an inner conductor element 1, an outer conductor element 6 and a dielectric area 4 between the inner conductor element 1 and the outer conductor element 6. The inner conductor element 1 is a continuous element and consists of a core 2 of hardened conductive material exhibiting good elastic properties surrounded by a metal shell 3. A filament 5 of low dielectric constant material is wrapped around the inner conductor element 1 and fixed on the surface of the inner conductor element 1. The outer conductor element 6 consists of a metal shield. These high speed coaxial contact and signal transmission elements are used for the transmission of high speed electrical signals in high density fashion and for contacting and testing electrical devices with minimal dimensions.