This versatile injector dials from 1ml to 12.5ml in 0.5ml increments. It has an ultra-durable design with an elongated needle nut for extra application protection. packaged in a clear plastic bag with a header card for hanging and contains: one soft medical grade tubing, two hose armour springs, three bottle collars (20 mm, 30 mm, and 33 mm) with uni-lock draw-off system, one metal luer lock needle nut and one lube packet.