Estes 1593 1/2A6-2 Model Rocket Engine Pack – 3 Engines with Starters & Plugs The removable top tray has

The removable top tray has adjustable dividers for small organization and the larger lower one is for your larger items

A 9V battery is required for operation

A great introductory kit for studying the basic rock types

predefined library waveforms included: sine(x)/x DCV sweep

switch dies

Estes 1593 1/2A6-2 Model Rocket Engine Pack – 3 Engines with Starters & Plugs The removable top tray hasPLEASE NOTE: These are 18mm diameter engines. Please refer to the instructions that came with your rocket (or the rocket's product description) to determine engine compatibility. Estes 1 2A6 2 engine pack includes 3 engines, 4 starters, and 4 starter plugs The 1 2A6 2 is a single stage engine designed for flights in rockets weighing less than 2 ounces, including the engine Recommended for use with the Wizard, Alpha III, or other compatible rocket kits