Antiproton
$11.99
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The ANTIPROTON is the antiparticle of the Proton. Also part of the Antiparticle 14-pack. Approximately 5 oz (120 gm); 3.5 inches (12 cm) across.For ages 5 and up as it contains glued-on/small parts. CATEGORY: ANTIPARTICLES > ANTI-NUCLEONS
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