Be careful, it does not have a resin core. It does not adhere properly to copper, therefore the quality of the product is poor, I do not understand the 5 stars of some people. You can only make balls when you are going to solder or solder very thin cables with only one wire. It stays cold and dark which the cable detaches and the tin is destroyed I have a roll that is impressive how it adheres, with a resin core and the solder is very very bright but this one that you have sent me is very bad and I have wasted my time and € 5 It's a hoax The seller does not answer anything
ithem is not recived