A carabiner is included in the training kit. However, I would caution people to call them mountain climbing clips, as only 2-3 percent are actually that, most are dangerously weak. Never use one them to carry your weight, unless you are 100 percent sure they are that type of Carabiner.
We can buy the Travel Training Kit here on Amazon.com, shipped by Amazon to get it fast. http://www.amazon.com/HoboTraveler-com-Travel-Security-Training-Pieces/dp/B00N590IBE/