This extra finely braided, pure copper wicking braid absorbs molten solder. Wick is coated with non-activated, white rosin flux (meets MIL-F-14256F, type R) that leaves no corrosive residues. Length: 100 ft. Width: 0.110' Application: Large Pads Color: Blue Flux Type: Rosin Lead-Free Solder Compatible: No Length 1: 100' RoHS Compliance: Yes Size: #4