<prompt> Not self retaining hand held retractor s isare:Mollisons mastoid retractorJansens mastoid retractorLempes endaural retractorDavis Retractor  <response>: Answer- D. Davis RetractorThese retractors do not need an assistant to hold them in place.It hold tissue apa and lock it in place.Hand held retractor-Hohmann RetractorLahey RetractorSenn RetractorBlair Rollet RetractorRigid RakeFlexible RakeRagnell RetractorLinde-Ragnell RetractorDavis Retractor 