Wedge-shaped wooden black door stop door stopper. Made from "natural solid Japanese oak," a gift from nature. Useful for keeping doors open for efficient cleaning. Great for ventilating rooms. A set of four, convenient for places where you want to create a slope. Non-slip material on the bottom. Comes with a Japanese-style string for hanging when not in use. Size per piece (approx. cm): Width 4cm, Depth 8.5cm, Height 1.8cm, Weight 25g. Each one is handmade, so please understand that there may be slight variations in size.