Features spring loaded quick and safe application Solid paddles for added tissue protection Stainless steel Use Large dilator - For larger rabbits and rodents (over approx.1.5kg body weight). Small dilator - For small rabbits (under approx.1kg body weight), chinchillas and other small rodents. Used in combination with a mouth gag To retract the cheeks and so aid visualisation of the mouth and improve access to the cheek teeth. To protect the inside of the cheeks during treatment however other tissue guards need to be used in conjunction e.g. wooden lollipop sticks