Check the listing for details. Rocketarium Flying Model Rocket Kit Hydra Sandhawk RK-1007. Condition: New. Listed at 37.79 USD. Rocketarium Hydra Sandhawk Rocket Kit RK-1007This water-launched sounding rocket combined a NOTS 401A booster with a Sandhawk sustainer for two-stage flights. Prior to launch, the Hydra Sandhawk was submerged in ocean water, in a floating launcher, off the California coast. The sounding rocket soared to an altitude of 175 miles, carrying its scientific payload to the very edge of space. The kit includes four plywood centering rings, and other parts to build both booster and sustainer stages. Build your own rocket kit today and relive aerospace history on a smaller scale. This rocket kit requires a launch rod (not included) and is not to be submerged in water.Dimensions Overall length : 29.5" Diameter : 1.637" (BT60) Forward Fin Span : 5.637" Weight : 5.3oz Recommended Motors Booster : Estes® D12-0 Sustainer : Estes® B6-6, C6-5 Challenges: Multi-stage rockets have two stages to build. Each stage has it's own set of fins (which are pre-cut).The Hydra Sandhawk kit includes card-stock fin mounting attachments to add more detail. There's also a payload bay which is created by cutting a slit along a body tube. Model Rocket Kits are rated by Skill Level1 Beginner2 Intermediate3 Advanced4 Expert5 MasterIf you are just starting in the hobby start at the beginner level and move up from there at your own pace.What is needed to build and flyAll model rockets come in kit form that require assembly. The materials are primarily cardboard tubes, balsa or plastic fins and nose cone. Materials will vary by model and are typically specified in the description of each kit. Additional supplies will be necessary to build and finish your model rocket kit and may include:Scissors, Hobby KnifeRulerWood Glue, Model Cement or CA(Super Glue)SandpaperMasking TapeFinishing Supplies like:Wood FillerSealer/PrimerPaintLaunching Equipment and Supplies like:Recovery waddingLaunch PadLaunch ControllerPower supplyModel Rocket Motors and IgnitersA safe place to fly using guidelines from the National Association of Rocketry Safety Code