Prima Bottle Mount Vaccinator with fast simple bottle change system. this vaccinator makes vaccination a much easier process. Revolutionizing the task of giving iron shots! The fast-fit bottle mount provides a fast bottle changing system for most 100 ml bottles. Glass bottles are protected against breakage with the fast-fit system. Bottles can be changed by sliding out the used bottle and inserting a new. full bottle. No down time while changing bottles. Steel needle nib adds great strength to a critical stress point. 5ml adjustable dose with standard and fast-fit bottle holders.