Official name: Tantetsu Marugoto Free Pass
Price:2200yen/person
Valid:1day
You can ride on Tatetsu trains as many time as you want in a day(For express train, only non-reserved seats are covered by the pass).
If you are a day tripper to Tango region and want to use Express trains but don't hold JR Pass, then perhaps worth to buy.
Example;
Express train(non-reserved seat) between Fukuchiyama-Amanohashidate:1420yen/person(one-way)
This pass is available until 31st July 2016.