Here are some that are barbed and some with 10 32 threads.
http://www.sprinklerwarehouse.com/Bu...ers-s/9785.htm
And some more like this.
I have used these before they work great.
Same as before some barbed and some 10 32 threads.
http://www.sprinklerwarehouse.com/St...ers-s/8355.htm
One good thing about these threaded type emitters are you can change out to a mister or mini spray and use them to wet the soil when you plant seeds out in the garden.
Worth