Estes 1507 A3-4T Mini Model Rocket Engines, 4 Count – 13mm Single-Stage with Starters & Plugs The set of detailed water-slide

The set of detailed water-slide decals even includes the distinctive white “crack” that Gus painted onto the side of his spacecraft to make it resemble the actual Liberty Bell

Use any Full size glue stick

The Expert target is smaller and more difficult to shoot

4 mm) with removeable neoprene jaw pads

Estes 1507 A3-4T Mini Model Rocket Engines, 4 Count – 13mm Single-Stage with Starters & Plugs The set of detailed water-slidePLEASE NOTE: These are mini (13mm 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. Estes A3 4T engine pack includes 4 mini engines, 4 starters, and 4 starter plugs The A3 4T is a single stage mini engine designed for flights in lightweight rockets Recommended for use with the Mini Mean Machine, Mini Honest