Estes 1566PK3 D12-3 Model Rocket Engines, 3 Packs – 6 Engines Total with Starters & Plugs 40 great experiments to learn

40 great experiments to learn basic electronics fundamentals quickly

long lasting Aluminum Oxide that is suitable for sanding a wide range of surfaces including including wood

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Line voltage warning LED

Estes 1566PK3 D12-3 Model Rocket Engines, 3 Packs – 6 Engines Total with Starters & Plugs 40 great experiments to learnPLEASE NOTE: These are large (24mm diameter) engines that will only fit certain model rockets. Please refer to the instructions that came with your rocket (or the rocket's product description) to determine engine compatibility. 3 Packs of Estes D12 3 engines total of 6 engines (each pack includes 2 engines, 2 starters, and 4 starter plugs) The D12 3 is a single stage engine designed for rockets with a maximum lift weight of less than 14 ounces