{"product_id":"estes-pro-k-25-astron-alpha™","title":"Estes Pro K-25 Astron Alpha™","description":"\u003cp\u003eCelebrate 60 years of model rocketry history with the K-25 Astron Alpha™. This special anniversary edition recreates the original Alpha kit that inspired generations of builders, featuring authentic details and vintage design elements from the early days of Estes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill Level\u003c\/strong\u003e: \u003cspan\u003eIntermediate\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"69\" data-end=\"232\"\u003e\n\u003cstrong data-start=\"71\" data-end=\"95\"\u003eRecommended Engines: \u003c\/strong\u003eA8-3, B6-4, C6-5, C6-7\u003cstrong data-start=\"102\" data-end=\"119\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjected Altitude: \u003c\/strong\u003e1500 ft. (457 m)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"144\" data-start=\"116\"\u003e\u003cstrong data-end=\"144\" data-start=\"116\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-model-slug=\"gpt-5-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" dir=\"auto\" data-message-id=\"f8ebf93c-8ab7-493e-8cff-c81c0dc11c36\" data-message-author-role=\"assistant\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\"\u003e\n\u003cul data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"423\" data-start=\"45\"\u003e\n\u003cli data-end=\"96\" data-start=\"45\"\u003e\n\u003cstrong data-end=\"71\" data-start=\"47\"\u003eRecommended Engines:\u003c\/strong\u003e A8-3, B6-4, C6-5, C6-7\u003c\/li\u003e\n\u003cli data-end=\"132\" data-start=\"97\"\u003e\n\u003cstrong data-end=\"117\" data-start=\"99\"\u003eLaunch System:\u003c\/strong\u003e Porta-Pad II\u003c\/li\u003e\n\u003cli data-end=\"175\" data-start=\"133\"\u003e\n\u003cstrong data-end=\"155\" data-start=\"135\"\u003eLaunch Rod Size:\u003c\/strong\u003e 1\/8 in. (3.18 mm)\u003c\/li\u003e\n\u003cli data-end=\"224\" data-start=\"176\"\u003e\n\u003cstrong data-end=\"205\" data-start=\"178\"\u003eProjected Max Altitude:\u003c\/strong\u003e 1500 ft. (457 m)\u003c\/li\u003e\n\u003cli data-end=\"276\" data-start=\"225\"\u003e\n\u003cstrong data-end=\"247\" data-start=\"227\"\u003eRecovery System:\u003c\/strong\u003e 12 in. (30.5 cm) Parachute\u003c\/li\u003e\n\u003cli data-end=\"312\" data-start=\"277\"\u003e\n\u003cstrong data-end=\"290\" data-start=\"279\"\u003eLength:\u003c\/strong\u003e 12.25 in. (31.1 cm)\u003c\/li\u003e\n\u003cli data-end=\"349\" data-start=\"313\"\u003e\n\u003cstrong data-end=\"328\" data-start=\"315\"\u003eDiameter:\u003c\/strong\u003e 0.98 in. (24.9 mm)\u003c\/li\u003e\n\u003cli data-end=\"382\" data-start=\"350\"\u003e\n\u003cstrong data-end=\"363\" data-start=\"352\"\u003eWeight:\u003c\/strong\u003e 0.8 oz. (22.7 g)\u003c\/li\u003e\n\u003cli data-is-last-node=\"\" data-end=\"423\" data-start=\"383\"\u003e\n\u003cstrong data-end=\"402\" data-start=\"385\"\u003eFin Material:\u003c\/strong\u003e Laser Cut Balsa Wood\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }\u003c\/style\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":43905456701482,"sku":"001221","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/4457\/6042\/files\/1221-Astron-Alpha-Rocket-Kit.webp?v=1765983250","url":"https:\/\/sheldonshobbies.com\/products\/estes-pro-k-25-astron-alpha%e2%84%a2","provider":"Sheldons Hobbies","version":"1.0","type":"link"}