The SOL-A1-1/2LB is a No Clean Water-Washable Synthetic Flux Core Solder Wire.

SPECIFICATIONS
Composition: 60/40
Diameter: 1mm (0.40″)
Melting Point: 423 ~ 428°F (217 ~ 220°C)
Flux Type: No-Clean, Water Soluble
Process: Lead-Free
Spool: 1/2lb