54mm to 75mm adapter for use with Aeropack 75 mm motor retainers only.

• For fitting 54mm motors in rockets with RA75 motor retainers.
• Precision CNC machined 6061-T6 aluminum components.
• Type II black anodized for wear and corrosion resistance.
• Centering ring includes stainless steel socket head cap screw.
• Allows a quick change between 75mm and 98mm motors.
• Holds motor from moving forward and backwards.