Dear Sir or Madam,Please offer me the following gears including deliver time: item number number of pieces GTL20V-A-45 100 GTL20V-A-45 200 GTL20V-A-45 500 GTL20V-K-06 100 GTL20V-K-06 200 GTL20V-K-06 500.Furthermore, I would like to know the extra charge.If the parts are galvanized zinc or galvanized nickel Show More