Ditto. If you are looking at other ones, make sure you do not get the type that you have to push like a hypodermic needle. Those are so much trouble especially if you get a little grease on them. The makin's clay extruder has a screw in type dispenser and work wonderfully.
I use lemon extract to get mine to stick to the cakes. I transported my sons wedding cake over a hour and a half, carried extra with me in case some fell off, and not one fell off. They were not as large as the ones in the photo here. The lemon extract dries faster than water is another reason I used that instead of the water.