Jaegher Ascender uses the most modern steel tubeset available : Columbus XCR. These stainless tubes are seamlessly made, starting from a solid billet. It is machined and cold drawn to obtain the final required thickness. In this way the very high mechanical characteristics are uniform and constant in the whole section of the tube. Thanks to the the special chemical composition of this new alloy, the grain structure is not altered by the welding. Each tube is exquisitely TIG welded to produce a frame superior to anything else.