Professional Violin Strings,Aluminum Magnesium Alloy Soft String for Violin,Fiddle Cord 4/4 3/4 1/2 1/4 Size 20pcs or 10 sets for select
One set included EADG strings 
 The E strings made of the steel.  
 The ADG strings  made of the aluminium magnesium alloy
They will improve the violin's sound bette