I have a bunch of these little (medium) tentacles that I use all the time as props and bits of bigger baddies, plus they match the giant tentacle Gifted Vision makes (2x2 base but 5" tall) and the mega kracken body (6x6 base). Those aren't available yet through Paizo but you can get them on the Gifted Vision site. One of the big tentacles came out in the blog a few weeks ago about the end to the Paizo staff's Egypt campaign. Really nice stuff.
All the miniatures in this line are fantastic! They are to scale with both Pathfinder Battles and D&D Miniatures. Quality material, nice sculpts, and great pain jobs. I love them. I only wish there were more to choose from.
They are mediums. The larges came with the kickstarter and as far as I can tell are only available with the kraken bundle or as an individual purchase for people who are subscribers to them.