Thomas Medical Zinnanti Uterine Injectors 2mm & 4mm. Sterile, disposable, ready to use. Shaft curved properly (uterine sound shaped) for use in anteverted or retroverted uteri (4mm only). Snap-on cervical stop custom set for every patient. Snap-on cervical stop V-shaped design for easy view of external cervical os. Patient ambulatory once instrument properly inserted. Durable no-crack luer fitting on flexible collar for convenient injection. No spring or weights added. Latex-free. 12/BX. Priced per box.