GemLock strut with hinge bent
GemLock strut with hinge straight

Hinges and folding struts


Yes you CAN fold stainless tubing

Better access.
Better stowage.
Just better.


Gemini Marine Product’s patented articulated hinge and GemLock folding strut assembly bring simplicity and elegance to your boat.

When opened, a perfectly placed pair of push buttons lock a sleeve in place over the hinge so the strut only folds when you want it to fold.

The design ensures that any strut can also double up as an ocean-rugged grab rail, even when also acting in another capacity. Our step-by-step instructions make it easy – see below.

Use them to:

  • Make spreader bars on bimini tops that eliminate tensioning straps and give your boat a cleaner look and better cockpit access.
  • Install grab rails and pusher bars on dodgers that fold quickly for easy storage.
  • Make folding tables and T-tops, openings in life line rails and stowable jumper seats.

Don’t forget:
Now you can buy kits to add grab rails or convert to a strapless bimini with ease.
Kits contain all the parts you need to install today.

Order now


Join our happy customers

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4.9 out of 5 stars (based on 61 reviews)
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Read reviews or leave yours at the bottom of this page.

Assembled GemLock folding struts


Ready-to-install assembled struts are available in 7/8” and 1” tubing using 316 marine grade stainless steel throughout. Both sizes come in 3′ or 6′ lengths – simply cut to your required length and install on your boat.

GemLock strut made with Gemini Marine Products' articulated hinge.
CAD drawing of strapless bimini setup from exterior
drawing of hinge mechanism

GemLock struts lock in position with a sleeve that slides over the joint made with our articulated hinge and is secured in position with a spring ball on either end. Our struts only fold when you want them to fold, making the entire length of a strut a great grab rail.

Why do you need our folding struts? So you can do things you can’t do any other way.

Articulated hinges


Individual articulated barrel hinges are available in a variety of sizes to meet different needs. Please consult our product specifications for details or call us for advice on which hinge is best for your job.

Good Gear says our hardware gives your boat “a certain elegant attraction“.

Ordering is quick, easy and secure


Just choose the items you need and add them to your cart.

You can even leave your cart to do more shopping then check out any time you’re ready. To return to your cart, click the box at the far right of every page (the cart box is only visible after you have added items to your cart).

You can also buy from any of our distributors if you prefer.

See how it’s done


Strapless bimini conversion guide  download

Review your new
hinges and struts


Read hinge and strut
reviews


Excellent: I DID buy from you again (and again)

November 19, 2022

I have purchased several Gemini stainless steel mounts, end caps, etc. to fasten a 365 watt solar panel to the davits on my sailboat. The design and versatility of the Gemini items made it possible to build a fantastic custom solar panel mount and save at least one large Boat Buck compared to the cost of a factory mount. Everything I purchased from Gemini was top notch quality, and I appreciated being able to talk with a human and the expeditious shipping! Cool stuff, great quality and customer service!

Scott L.

Response from Gemini Marine Products

Thank you for the kind words – we do work hard to make sure people get what they need when they need it.

The hinged strapless Bimini kit works well.

October 19, 2022

Installation was easy. Absolutely recommend the hinged mount over the slip-on. Be sure to center the tube joint when folded before tightening and setting the Bimini back up. Double check measurements. Save lengths of marked tape just in case you discover measured incorrectly. If you do make a minor mistake, or if the tube does not make canvas tight enough, no biggie. Simply loosen the mounts and lower horizontal tube until the canvas is made tight. That is what I did.

Paul G.

Response from Gemini Marine Products

That’s exactly what we would recommend! We’re so glad you’re pleased with your new bimini.

Old world craftsmanship is still accessible.

October 15, 2022

I’ll be buying more, thanks!

Michael M.

Response from Gemini Marine Products

We’re ready anytime you are.

Fast Shipping, excellent product

August 23, 2022

just what I needed to attach my solar panels to my arch. these are robust and the standoff and bolt arre very substantial and solid.

Jeff W.

Response from Gemini Marine Products

We’re so glad they are working for you. Those hex bolts are handy. Thank you for taking the time to let others know.

Great company!

August 15, 2022

Product quality is perfect

Howard C.

Response from Gemini Marine Products

We’re so glad you found us!

Tube supports for solar pannels

August 11, 2022

Great no problem parts are high quality

Stuart l.

Response from Gemini Marine Products

Thank you! We knew you’d like them.

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