This is a NEW Kester 83-4000-0000 SN60PB40 Kwik-Draw Rosin Core Solder Pocket Pack, 0.031" (0.75mm) 21ga Wire Diameter.
- 60% Tin 40% Lead.
- 0.031'' (0.75mm) 21ga Diameter.
- Tin (7440-31-5) Lead (7439-92-1) Rosin (8050-09-7).
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