{"product_id":"magnetic-balls-17mm-pack-of-20","title":"Magnetic Balls 17mm Pack of 20","description":"\u003ch2\u003eTwenty 17mm balls - 70c each, and they spin when they repel\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003e20 plastic-covered magnetic balls, 17mm diameter.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe reason to have spheres rather than discs is that a sphere can rotate. Bring two together the wrong way round and instead of just pushing apart they spin to find their own alignment - which is magnetism visibly solving a problem, and it is far more convincing than a diagram of field lines.\u003c\/p\u003e\u003cp\u003eTwenty is a top-up quantity: enough for a pair of students to build and chain, and the right thing to buy when the Fun Pack's original twenty have gradually gone behind the cupboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSafety - the supplier's warning, in full and unedited:\u003c\/strong\u003e \u003cem\u003eThe intended use of these magnets is for educational purposes only. Adult supervision is required at all times. Not suitable for children under the age of 8. Not suitable for craft projects. Seek immediate medical attention if magnets are swallowed or inhaled. These are strong powered magnets and can cause medical issues if digested. These magnets are not a toy and are not intended for early learning centres or younger age groups in school or learning or unsupervised environments.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy we are not paraphrasing that.\u003c\/strong\u003e Two or more small magnets swallowed separately can attract through the wall of the bowel and cause a perforation. It is a surgical emergency, not a stomach ache. If you are buying for a prep or early years room, buy the large ferrite block or the giant horseshoe instead - both are too big to swallow.\u003c\/p\u003e","brand":"MTA Essentials","offers":[{"title":"Default Title","offer_id":53792733561195,"sku":"EVNK1001","price":14.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/2795\/8891\/files\/nk1001_magnetic-balls-pack-of-20.webp?v=1788350916","url":"https:\/\/megaofficesupplies.com.au\/products\/magnetic-balls-17mm-pack-of-20","provider":"Mega Office Supplies","version":"1.0","type":"link"}