how long are the smalls and do you make extra smalls ?

Hello, I measured the size small to be 29.5cm from the end of one buckle to the other end (as shown in the picture), or 17cm for just the metal spring. Tusa does not make a size extra-small in these straps, so the small is the smallest size. Please let me know if I can further help in any way. Thank you, Nathan Houseofscuba

Will these fit on scubapro twin jet split fins, and scubapro jet sport fins?

I believe they will. You may have to mix and max the clips, as I have had to do with some fins. But they have really been great!

My wife uses us diver shredder fins will these fit this type of fin? what is the dimensions of the post they will fit?

I am not familiar with the US Diver product. I replaced the rubber heel strap on Bio Fin split fins.

Is this model ta80 or ta81?

Hi Cristian,Thanks for your question. These are the TA80 models. If you have any other questions, please let us know.ThanksDivemaster Chris866-728-2293

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TUSA Open Heel Dive Fins Spring Strap (Pair) (Medium)

Product ID: 470444916

EC$861

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In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

TUSA Open Heel Dive Fins Spring Strap (Pair) (Medium)

Specifications

Apparel Closure Type	Buckle
Material Type	Stainless Steel
Color	Black

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