The closed reed call has a DA1 body with a closed reed mouthpiece.  It makes a raspy sound which is great for a bear cub distress call, a fawn distress call, a coyote distress call, or a bobcat call.  Any reed can be put in it. 
The open reed call is an RR1 with a newly designed barrel.  It makes a great distress call, and it is very popular.  It makes a great elk cry and can sound bird-like. 
These calls come with lanyards.

The RR1 has a 1/2 inch bore. I like to use it on smaller calls.  It is great for distress calls, bird calls, elk talk, and pup distress. You can get a nice raspy sound out of the RR1. The RR1 makes a great elk or distress call.

The RR2 has a 5/8s inch bore. The RR2 makes sounds a lot different than the RR1.  You can use the RR2 as a howler tone board with the wider, .014 mylar reed. The RR2 makes a great distress call when you use the narrow reed or a wider .010 mylar reed.  You can get some great elk talk sounds or coyote talk sounds.  Using the longer reed, you can imitate birds and lots of other animal's distress cries.

This call features a newly designed barrel and mouth piece.  It can be tuned to be rasby for a bear, coyote, or bobcat call with a cotton-tail reed. This call is CNC machined from delrin by Yellerdog Calls.  This is a great sounding call.

This call has a 3/4 inch bore.  It uses the Yellerdog Calls' YDH1 toneboard.  The DA2 is CNC machined by Yellerdog out of Delrin.  It is quickly becoming a favorite because it is easy to make howls and distress cries.

This call can be used as a squeaker, or if a medium vioce reed is used, it can be used as a distress call.  It sounds great as a coaxer because it has a very bird-like call.  The DA Coaxer is CNC machined from delrin by Yellerdog Calls.  It comes with a lanyard and an extra reed.

The YDD2 has a 5/8 inch bore.  It has a delrin body and toneboard, which are CNC machined by Yellerdog. It makes a great distress cry for all predators and also makes great howls.  This open-reed call is easy to learn how to use.