What Specific Adapter Ring for GND Filters

[nphsbuckeye]

Maybe it's my frustration for my computer being beyond slow, but, what specific adapter ring is BH talking about: http://www.bhphotovideo.com/c/product/387434-REG/Cokin_CH250_Graduated_Neutral_Density_Filter.html# features. I would just like to use 77mm filters on it for right now. Thank you.

[Jon]

Cokin grads are rectangular and fit into a slotted holder; there are adapters available to mount that holder to any desired lens size. What you'd need to go with that is a 77 mm Cokin adapter ring.

[nphsbuckeye]

That's what I thought, but wanted to make sure and buy what I needed, at the same time. Thank you sir.