Wholesale Prices in Price Matrix. The Rattle Snake Eggs are sold by the pair. For each one (1) you place in your shopping cart, you will receive a pair of them. Magnetized hematite balls. Hold in one hand (keeping them seperated) toss up in the air. As they chase each other, they make a clicking/whirling sound. Sounds like cicadas. HOTTEST thing since the "Hoola Hoop". Size : 25MM. We can ship large amounts ordered via USPS Priority flat rate for either $5.20 in a small flat rate box which holds 40 pair or for $10.95 in a regular flat rate box which holds 200 pair shipped in the US. Anything else ordered along with large quanities of rattle snake eggs will have to be shipped separately to avoid smashing the other items). Also called "Kissing Rocks" or "Rattle Snake Egg".