welding kit perfectly for modelisme (plane, chopper, drone), understood, 99.3 tin solder 0.7cuivre, desoldering pump very easy to use one pushes, is placed on the hot junction, pressing the button and presto surface own work !! impeccable support, no risk of burning, iron soldering fits well, just the right length; 85mm for the metal part ==== clean solder, clear and precise, good tool ==== good work !!! very good price !!! Delivery molto rapido, good protection, very good buy !!! === Happy !! not life,