This is a 38mm diameter single use motor. It is ready to fly and doesn't need any motor hardware. You will still need a retaining system.
 

Because of the impulse class (J), to purchase this motor you must be Tripoli, AMRS or ARA level 2 certified (or attempting a level 2 certification).

J425 Redline™ DMS™

$145.99Price

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  • Motor J425
    Manufacturer Aerotech
    Type Single Use (Disposable Motor System™)
    Flame Redline™ (R)
    Quantity per pack 1 motor
    Diameter (mm) 38.0
    Length (cm) 35.6
    Ejection Delay (s) 14
    Average Thrust (N) 425.0
    Maximum Thrust (N) 452.0
    Burn Time (s) 1.6
    Total Impulse (Ns) 676.0
    Total Mass (g) 631
    Propellant Mass (g) 364