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Sulfur-free proto typing modeling material, designed to replace Kleen Klay and Roma Plastalina. For model making, sculpting, mold construction and work requiring non-hardening, reusable, self-adhering ultra smooth clay. Unlike the materials it replaces, Protolina contains no sulfur or sulfates making it ideal for use with silicon type mold compounds. Protolina is available in three firmnesses and two colors. Natural white is available in 1 lb. bars and gray green is available in 2 lb. bars.
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