Telwin aluminum wire welding kit, model 802273 usable on Telwin Mastermig, Digital Mig and Supermig welding machines. Composed of two wire guide sheaths, the first for cables with section from 1.0 to 1.2 mm and the second for the cable band from 1.6 to 2.0 mm, two pairs of rollers, the first for wires from 1.0 to 1.2 mm and the second for 1.6 to 2 mm wires, three pairs consisting of three contact tubes each, the first for 1.0 mm cables, the second for 1.2 cables mm and the third for 1.6 mm cables and finally a gas pipe with a length of 3.3 m.