Estes 1602 B4-4 Model Rocket Engine Pack – 3 Engines with Starters & Plugs Genuine SE products come with

Genuine SE products come with the SE logo on the packaging

Rubberized over-molded housing provides impact and drop resistance in a sleek ergonomic design

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

Medium Size - Adjustable from approximately 14

Size: 6" x 4¾" x 3"

Estes 1602 B4-4 Model Rocket Engine Pack – 3 Engines with Starters & Plugs Genuine SE products come withPLEASE 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