Estes 1602 B4-4 Model Rocket Engine Pack – 3 Engines with Starters & Plugs Size: 6" x 4¾" x

Size: 6" x 4¾" x 3"

Knurled Grip Handles Provide Stability

This special motor unit allows you to connect it to all sorts of models and power them up with vibrational energy

Designed to resemble an authentic treasure chest in a miniature form that you can hold in your hand

Estes 1602 B4-4 Model Rocket Engine Pack – 3 Engines with Starters & Plugs Size: 6" x 4¾" xPLEASE 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 B4 4 engine pack includes 3 engines, 4 starters, and 4 starter plugs The B4 4 is a single stage engine designed for model rocket flights weighing less than 3. 5 ounces, including the engine Recommended for use with the Baby Bertha, AstroCam, Cadet, Riptide, or other