The clamp module RMC-TTx features a D-series clamp with two jaws for an additional piece (T). 

In the clamp modules RMC-DTx, one jaw is for additional piece jaw and another one is of another type. For example, in the RMC-DTS one jaw is smooth.

 Code Dim.  STEP
RMC-DT icon pdf
RMC-DTS icon pdf
RMC-DTR icon pdf