BOTTLE MOUNT VACCINATOR 0.5ML, Bottle-mounted vaccinator recommended for use with Excede for Swine. Durable plastic design with ergonomical v-grip handle provides easier, more comfortable use. Fits up to a 100 ml bottle. Retaining screw cap keeps bottle securely mounted. Bottle-mount can be rotated 360º for convenience. Features Needle Release Grip (NRG) Cap; simply screw in needle for quick attachment and removal. Dosage easily adjustable from 0.1-0.5 ml for extremely accurate injections. Easy to clean and change o-ring. Can also be used with poultry.