hc_diy large magic attract sculpture round balls 15mm 25mm big oversized 18 pcs & 6 pcs huge magic office toys for intelligence development and stress relief (6pcs 25mm+18 pcs 15mm)  <br> endless play methods: the magic balls have endless combinations up to your <br>patience and creativeness. it could fully improve your microcirculation, so as to develop your <br>imagination and creativity.a toy that appeals to you, interesting , unrestricted, unrestrained, <br>your brain and hands are so powerful that it can become a great shape. it's up to you to <br>make all the balls. <br> not suitable for children under 15 years. <br><br>material : metal <br>color : black <br>weight : 250g or 400g,large balls