{"product_id":"united-scientific®-rolling-friction-carts-set-of-4","title":"United Scientific® Rolling Friction Carts - Set of 4","description":"\u003cp\u003eThis set includes four carts of equal mass, each with wheels made from a different material: soft silicone, soft rubber, wood, and fabric. The free rolling wheels quantitatively demonstrate friction without slipping. Includes activity guide.\u003cbr\u003eTechnical Specifications:\u003cbr\u003eCart Dimensions: 5.25” x 2.125” x 1”\u003cbr\u003eWell dimensions: 2.3” x 2” x 0.94”\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eApproximate wheel dimensions: 1.9” long, 1.17” diameter\u003c\/li\u003e\n\u003cli\u003eSmooth rolling wheels\u003c\/li\u003e\n\u003cli\u003eFour different materials\u003c\/li\u003e\n\u003cli\u003eIncludes activity guide\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"United Scientific Supplies","offers":[{"title":"Default Title","offer_id":49962299425045,"sku":"USSROLLFRICT","price":62.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/4897\/3845\/files\/ROLLFRICT_20Rolling_20Friction_20Carts.jpg?v=1781070821","url":"https:\/\/unitedsupplycorp.com\/products\/united-scientific%c2%ae-rolling-friction-carts-set-of-4","provider":"United Supply Corp.","version":"1.0","type":"link"}