Rosin inch 44 inch is a high activity RA core change made for exceptional immediate wetting activity, even on nickel surface areas. Although" 44 inch is a ra-based material, the deposits are non-corrosive If not cleaned up. Per j-std-004b," 44 inch is identified as Rom1 change.
Percent of tin - 60 and percentage of lead - 40
Core size: 66