The biggest one I could find at Lowe's.  Overall length is about 9".  When I
get a chance I'll take a picture with a ruler next to it.
BTW, the last time I looked they came with two hooks or two eyes.  Mine was
a combination, one for each end.  It was for sale but the only one like it.
You might have to 'mix and match' to get just one.

On 6/4/07, Troy <colorworks@gci.net> wrote:
>
> Loren:
>
> What size turnbuckle is used for your hatch latch?
>
> This is the link for reference:
> http://www.pbase.com/labusch/image/64405807
>
> where I first saw the idea.
>
> Thx,
>
> Troy
>