Six fins, a large payload section, and PML's standard G10 fins, QT airframe, and great quality make this a bird you're sure to enjoy. Another of our kits that can fly on lower-power motors, the PML X-Calibur! Comes standard with a 38mm motor mount, but can easily fly with 29mm motors using the motor retainer HAMR-38-SET and the HAMR-38/29-ADPTR. . Fly it low and slow on a G motor, or put in an I and watch the X-Calibur "disappear"!• Pre-slotted Quantum Tube airframe• 12" payload section• 28" ripstop nylon parachute• Plastic nosecone• 38mm motor mount• Kevlar tether (Piston ejection system replacement)• G-10 fins• RB-1000 rail guides for 10/10 launch rails INSTRUCTIONS SPECIFICATION: Diameter: 2.2" | Height: 46" | MMT: 38mmParachute: 30" | Payload: 12"Fin Array: 6 unusual | Fin Thickness: 0.06" The X-Calibur is the perfect kit for Pre-Cert & Level 1 flights. This rocket stands 46" tall, is 2.2" in diameter and has a 6 unusual fin design. This rocket comes standard with a 38mm motor mount and can fly on G thru I motors. At ~32 oz., the 28" parachute is sized right for the stock kit to make a safe landing under most field conditions. This kit comes standard with our RB-1000 rail guides for use with 80/20 brand launch rails.