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Are stand riser diameters standardized?

Rick Gates

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I recently made a decision to try out some of Kupo's 3-way and 4-way clamps as a way to lower my gear footprint.  The clamps wrap around the riser portion of c-stands and combos, and hold baby spigots and receivers and J-hooks and such.

So I measured my stand's riser diameters to see where the clamps could fit.  Turns out that the three risers on my c-stands measure (from bottom up), 35mm, 30mm and 25mm.  And the risers of the combo stands are 45mm, 40mm, 35mm and 30mm .  There's 5mm difference in diameter between each riser.

But all my c-stands and combos are Avenger products.  Is the 5mm difference standard to all c-stands and combos, or just Avenger?

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Wow, that's way thinner than my Avenger C-stands, which in SAE are 1 3/8", 1 3/16", and 1".  The gobo arm on the C-stand is 5/8", same as a baby pin.

Good to know.  Thanks!

Edited by Rick Gates
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