4 Straight Halsted-Mosquito Hemostat 4 Straight Halsted-Mosquito Hemostat H4 Multipurpose instrument used to clamp off blood vessels, remove small root tips and grasp loose objects. Featuring halsted straight beaks. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.