Labstamp® Restraints are available in two sizes, small and large. The Large restraint is for use with mice that are between 18 and 45 grams. The restraints are specifically built to be used with the Labstamp® Applicator Machine. Restraints may be cleaned and disinfected using ETO, Irradiation, Autoclave, VHP, Spray or Wipe with MB10 or equivalent or Chlorine Dioxide Gas. Restraints can be used for other animal manipulations, such as tail vein injections.