The hidden door hinge features a sturdy spring mechanism that ensures reliable and consistent performance. Its sleek design makes it suitable for concealed installations, maintaining the clean lines of your interior spaces. Suitable for various applications, it provides a smooth and silent closing action, making it an excellent choice for households seeking both style and practicality. Features -Color:Transparent -Material:Acrylic, stainless steel -Size:4.50X2.20X2.00cm/1.77X0.86X0.79in -Screw hole: 4mm Hole spacing: 22mm, 25mm -Note: Suitable for use with boards ranging from 2 to 6mm -Self-closing functionality door hinge: automatically closes doors to enhance convenience and security, making it ideal for busy households and workplaces -Concealed design: hidden installation ensures a clean and sleek appearance, blending effortlessly with modern interior styles -sturdy spring: features sturdy spring construction for reliable performance, even under heavy loadbearing conditions -Clear finish door hinge: transparent hinges offer a unique aesthetic that complements various door materials and designs -No-noise movement: designed for quiet operation, eliminating disruptive sounds during door usage for a serene atmosphere Package list: 2 x Hinge 8 x screws