Kester Solder 04-6337-0030 is leaded, ultra low dross bar solder. This bar solder is comprised of 63 percent Tin and 37 percent Lead.
Kester Ultra Low Dross: This bar is manufactured using the Ultrapure process and containing the same metal purity as Kester Ultrapure. Kester Ultra Low Dross is formulated with a special low dross additive that dramatically decreases dross formation on the solder pot.
Please note this item is sold by the 25 lb box and the price is by the pound (lb.). Must be purchased in minimums and multiples as shown above.