Cool.
I use these stand's in the shop while I do some body work or painting part's and they wrok perfect for a Kayak stand too. For 22 bucks can't beat it.
The chain's seen in the pic adjust there's some j hook's all you do is unhook the chain and adjust either wider or narrower and they fold right up.
I use only 1 for my Ocean Kayak Malibu Two Xl and it works perfect.
http://www.tooltopia.com/astro-pneumatic-557003.aspx