DEOSY  Intraligamental Syringe (1.8ml anesthesia cartridge, inch thread). Deosy design incorporates a leverage factor which enables the syringe to develop the high injection pressure, required for intraligamentary anesthesia, without undue operator fatigue.  One complete squeeze of the trigger releases one dose(0.2cc), which is sufficient to anesthetize a single root tooth for 30 minutes to one hour.  Std disposable dental needles (30G short recommended).