... salt spray test Product details: Type:Furniture hinge, Hydraulic hinge, one way hingeMaterial:SteelFinishing:NickleStyle:InsertOpening angle:90-105°Cup Diamater ... hinge closed. Strengthened spring, thickness 2.5mm instead of common one thickness: 1.5mmAdopt advanced hydraulic system,longer life time,smaller ... volumeFull over lay, Half over lay, Insert hinge available: Accessories: one way cabinet hinge