CG TECH 6 Pairs - Large 2 1/2" Rattle Snake Egg Singing Magnets 6 packs total 12 bullets size: 2 1/2"long Not only are they fun to play with, but they are also great for hand-eye coordination. They dance, spin and even "sing"! When you toss them in the air The two hematite magnets fly and collide, wrestling for equilibrium in a clattering, buzzing, Cicada sounding collision until they land at rest Fun for all ages. Made from quality material