Estes 1602 B4-4 Model Rocket Engine Pack – 3 Engines with Starters & Plugs This special motor unit allows

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

Genuine SE products come with the SE logo on the packaging

•Auto and Manual range selection

Size: 6" x 4¾" x 3"

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

Estes 1602 B4-4 Model Rocket Engine Pack – 3 Engines with Starters & Plugs This special motor unit allowsPLEASE 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