There are 110 cards that can be used to practice the production of post vocalic /r/ at either the word level or in phrases. I find this more useful than other products that I've purchased before because I also added phrases. Most cards only provide the single word level. There are many cards for each type of /r/.
I made them in powerpoint so that I could print them in "handout" mode to be the size of smaller cards. They are easy to use with other groups of students at the same time to address other issues such as grammar, vocabulary, describing and answering questions.
Also, all of my cards have different colors/themes with a code at the bottom for a quick reference for therapists.I have many sets of cards, so having them coded is key to staying organized. These are great for therapists who have to travel. I keep them in index card plastic boxes and label them with a sharpie.