All Nitrospray cryosurgery units are constructed with a double chamber, stainless steel interior to safely hold liquid nitrogen. The outflow track, located on the top cap, has a Luer Lock connector for easy insertion or changing of the various probes, cones spray tips, or other attachments selected according to intended use. Available with a trigger-activated, liquid nitrogen cryosurgical instrument, 5 spray tips, and base holder. These high quality units are refillable and lightweight, and are backed by a 3-year manufacturer’s warranty.  Manufacturer offers  30-day unconditional money back guarantee.