"SD SPOOL SIZE,WIDTH 0.100 IN.,COLOR BLUE; USED IN DESOLDERING TOOL; BRAIDED IN A TEMPERATURE/HUMIDITY CONTROLLED ENVIRONMENT USING ONLY THE FINEST OXYGEN-FREE,OIL-FREE,HIGHLY CONDUCTIVE 42 GAUGE FINE WIRE; THE BRAIDING PATTERN IS A UNIQUELY DESIGNED GEOMETRIC WEAVE FOR MAXIMUM SPEED AND SOLDER HOLDING CAPACITY; ULTRASONICALLY APPLIED,PURE WHITE ROSIN FLUX IS LAMINATED ON TO THE ENTIRE BRAID TO PROTECT AGAINST OXIDATION AND TO PROMOTE SOLDERABILITY"