{"product_id":"estes-b4-4-model-rocket-engines-3-pack","title":"Estes B4-4 Model Rocket Engines - 3 Pack","description":"\u003cp\u003eThe Estes B4-4 is a standard 18mm single-stage engine with a 4-second ejection delay, a step up in power from A-class motors for slightly heavier rockets. Total impulse 5.00 N-s.\u003c\/p\u003e\u003cp\u003eEach pack includes 3 B4-4 engines, 4 starters, and 4 starter plugs.\u003c\/p\u003e\u003cp\u003eShips via USPS Ground Advantage under our USPS hazmat authorization. A physical street address is required for delivery - rocket engines cannot be shipped to a PO Box. Follow the Estes safety code and all local rules, and supervise young rocketeers.\u003c\/p\u003e","brand":"Estes","offers":[{"title":"Default Title","offer_id":45701463670960,"sku":"A-1-3 B4-4 3PK","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0585\/1227\/7680\/files\/010019-B4-4-Bag.png?v=1792075571","url":"https:\/\/fiveboyz.com\/products\/estes-b4-4-model-rocket-engines-3-pack","provider":"Fiveboyz","version":"1.0","type":"link"}