Specifications: Product: Hidden Hinge Material: Copper+Zinc Alloy Color: Gold/Silver Dimension: As Pictures Shown Opening Angle: 0-180 Degree Styles: Modern/European/Classical . Apply to: Wooden Doors,Counter Doors,Cupboard,Wardrobe,Window etc. Feature: Easy-installing, Non-fading, Ergonomical Design. Package Included: 4 x Hidden Hinges with 16 Screws