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This flap stay is superbly engineered.

Essentially a uni-directional viscous coupling, it turns freely in one direction, and hydraulically slows movement in the other direction.

Inside the sealed body are eight slotted steel discs that control resistance. A thick, sticky fluid is forced through successive discs, creating resistance much like a shock absorber.

A much better design than typical sprung stays.

9" long overall.

Supplied with mounting hardware, screws, and instructions.

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