RPE screw For rapid palatal expansion by means of fixed appliances. - built-in stops prevent the screws from coming apart once maximum expansion has been obtained - small dimensions with maximum expansion - break-resistant retention legs, stable guidance throughout complete expansion - offset body for earliest possible angling of the retention legs - the integrated spindle friction prevents unwanted turning back - permanently laser-marked arrow on the body of the screw indicates the opening direction and max. expansion - screw can be tied down once desired expansion has been reached Packs (1 piece / 50 pieces) with 1 safety key, pack (10 pieces) with 10 safety keys. Screw body: 12.4 mm Material: stainless steel Maximum expansion: 10.0 mm Retention legs: straight 4 x 1/4 turn= 0.8 mm