38 mm Retainer Base for Madcow and Rocketarium paper, PML and GLR phenolic, Hawk Mt, Performance Rocketry and Madcow fiberglass (1.65" OD)

Installing this retainer body part on your rocket allows you to re-use same retainer cap on all your rockets where this part is installed.

• Precision Machined 6061-T6 Aluminum With Mil-Spec Type II Black Anodizing
• Large Quick-Turn Threads For Fast, Tool-Free Motor Change
• Installation: Simply Bond To Motor Mount Tube With JB Weld And You`re Done!
• Just Slide Motor In And Thread On Cap, That's It!
• Can Be Installed On Existing Rockets With Motor Mount Tubes Extending 3/8" Or More Below Lower Centering Ring