Tri-Tech is the ideal product for the brazing of hard metals, especially when brazing the teeth of saws. Tri-Tech is produced by the coupling of two sheets of silver alloys with a copper sheet in the centre, which thanks to particular technology and a specific very high pressure lamination, permits the coupling of the three sheets until a single layer is obtained. The final product allows the brazing of hard metals which satisfies all the requirements of sealing and mechanical and shock resistance needed, characteristics essential for the applications for which the tool is intended.