Equipment for Lateral Restriction and to Prevent Falling Provides displacement restriction of piers and prevention of bridge decks falling. OILES STOPPER series comes in two types: KU Stopper embedded in a substructure. KU Stopper KK Stopper Quake Inertia Force Disperser Restricts displacement and prevents falling of piers, and has beneficial effects on earthquake protection. Two types of OILES DAMPER STOPPER are available: OILES KP Stopper, which is a viscous fluid resistance damper mainly used in railway bridges, and OILES MS Stopper, a viscous shear resistance damper, mainly used in hi-way bridges. KP Stopper Viscous fluid resistance damper stopper MS Stopper Viscous shear resistance damper stopper