this ProsKit 9DP-031 desoldering wire is a professional-grade copper wick that is woven with the anti-oxidation capability to achieve high performance in desoldering operation. This 9DP-031 desoldering wire features high performance, lightweight, portability, pure oxygen-free copper property, and flux cleanliness. The ProsKit desoldering wire is presented in three optional models of 9DP-031A, 9DP-031B, and 9DP-031C, with three optional widths of 1.5mm, 2mm, and 2.5mm.