Gendernot specified unisex shapesphere cylindrical pieces216 materialmagnet metal note3mm magnetic balls goldensilver 2 color choose diameter 3 age8 to 13 years 5 to 7 years 14 years up categorymagnetic balls 3d puzzles diy kit science discovery toys educational toy magic prop building blocks magnet toys stress relievers holidaynew year childrens day carnival valentines day birthday christmas shipping weightkg0057 package dimensionscm757545 net weightkg0062