The res-o-two drum heads are the double ply version of the res-o-tone heads. Remo reputation for quality and consistency in manufacturing two ply heads is evident in the res-o-two models which use Remo clear film over the semi-translucent tympanic film, providing that familiar two ply response but with the added benefit of the extended tensioning Latitude and full range, clear and open tonality with the durability of a two ply head.