The Stonebreaker is a medium-sized, medium powered sport rocket.  The design concept is that this rocket is to be used to carry nuclear warheads into space to target large asteroids that are endangering the earth.

My particular rocket has been modified to use a smaller, 19" Nylon parachute. The stock 32" parachute supplied in the kit is much too large.  I also added a small altimeter compartment in the base of the hollow plastic nose cone. The other difference is the addition of a spring clip for the motor (not supplied) and I painted it bright silver instead of the suggested white.