- One (1) M6x6mm setscrewFeatures:

using easy-to-clean durable material on the outside and inside

Brain-Boosting Exploration: Dive into brain-boosting adventures with our educational toys featuring the Hermit Crab

A true kit for the professional model builder

Stimulate curiosity and inquisitiveness

Estes Rockets - A3-6T Model Rocket Engines, (4pk) Static Models Military - One (1) M6x6mm setscrewFeatures:Experience better sight lines and a calmer recovery with the Estes A3 6T mini rocket engine. This 13mm motor is tuned to deliver a short, energetic boost followed by a six second delay, so your model reaches its highest point and then pauses before the recovery system activates. The result is a cleaner, more dramatic flight that is easy to track from the ground. What makes the A3 6T stand out is its consistency. Estes engines are manufactured and