38 mm Universal Retainer Cap for any Aeropack 38mm retainer base
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Light-Weight Cap for all 38mm AeroPack Retainers. (not for hybrid motors)
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Precision Machined 6061-T6 Aluminum With Mil-Spec Type II Black Anodizing
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Large Quick-Turn Threads For Fast, Tool-Free Motor Change
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Just Slide Motor In And Thread On Cap, That's It!