Vastar Pocket Pack Tool Solder with Flux for Soldering, Electricians, Computer Repairs, Crafts, Hobbies, 60/40 0.031 0.50 oz. Tube Solder Diameter: 0.031 Solder Weight: 0.50 oz Flux Coated Great for Soldering, Electricians, Computer Repairs, Crafts, Hobbies, etc.