18mm Engine Retainer Set

This is the Estes 18mm Engine Retainer Set. This provides an alternate way to hold in the engine other than an engine hook.

Estes 18mm Engine Retainer Set #3187
 Estes Rockets # est3187
$6.39 on sale $5.89
Retail $7.99  SAVE 26% !
Estes Rockets Item # est3187
Features :
  • 3 Retainer Sets
  • 18 mm.
  • Estes 3187
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Spotlight Review

"Simple Yet Effective"
Mr. Northport (Northport, WA)
I really like these retainer ring setups as they make engine mounts simpler to put together. They also look better cosmetically, better finished look, as you don't have the middle finger sticking out of the end. It also makes it far easier to build two stage rockets.

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  • 3 Retainer Sets
  • 18 mm.
  • Estes 3187

Requirements & Suggestions

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"Great for new builds"
Time to get rid of those pesky engine hooks with these retainers!

"18 mm Engine Retainers"
Glad tha I ordered these retainer. I never have used them before. I like them more then engine hooks.

"Works Great"
Rocketman (Lebanon)
I have 2 rockets with this on. I never had any problems for either of them one had 12 launches into it and the other one had 3.

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