This is an ACID FREE solder kit MIX:

You are getting 3 items.

Item No. One is  Choice Quality Lead Free SOLDER Quarter Pound Roll (4 oz.) Composed of TIN & COPPER
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Item No. Two is an 8 oz bottle of Acid Free Flux! STUDIO PRO SAFE ART FLUX

Washes off with soap & water up to 14 days after soldering!

Non-irritating to the skin,
no greasy mess,
no zinc chloride
no ammonium chloride
no hydrochloric acid
no corrosive residue

It’s the safest one out there. It’s even Environmentally safe.
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Item No. Three is a Flux Brush – clean with soap and water after using