(Palmer Cap-chur Equipment) Cap-Chur disposable aero syringes are for one-time use with Cap-Chur CO2 guns. Aero syringes are completely assembled and do not require charges to dispense medication. As CO2 gun is fired, the syringe is pressurized. Medication is dispensed within 2 seconds of impact. These lightweight syringes travel a greater distance than reusable syringes. Clear barrel allows view of contents. Cap-Chur disposable aero syringes include 1" needles.