A protein complex that regulates RNA degradation by the exosome complex. In Saccharomyces the complex has a heterotetrameric stoichiometry consisting of one copy each of Ski2p and Ski3 and two copies of Ski8p. [ http://www.ncbi.nlm.nih.gov/pubmed/16043509 http://www.ncbi.nlm.nih.gov/pubmed/18042677 http://www.ncbi.nlm.nih.gov/pubmed/10744028 http://www.ncbi.nlm.nih.gov/pubmed/15703439 ]