This Lead-Free solid wire solder is perfect for auto-feeders on Selective Solder wave machines or hand-soldering large parts. This solder contains 96.5% Tin, 3.0% Silver and 0.5% Copper in a Solid, 0.125" diameter wire. SAC305 is a 4 lbs net weight spool of solder wire. Price is per Each Spool. Alpha item #148186.