Check Size: Knob Height: 31mm/1.21"; Knob Diameter: 41mm/1.61", Thread Diameter: 4mm/0.16"; Screw Thread Length: 63mm/2.48", fit for board thickness: within 30mm/1.18" Good Replacement: The shape design is ergonomic, design isgood match your home decoration. replace your old knobs, decorate your furniture Package Content: 4 x Ceramic Knobs, 4 x Screws; We provide mounting screws for easy installation, which can be according to the thickness of the different boards. If the screws are not suitable, please prepare your own screws Thank you for coming to our store. Brightly coloured, with a smooth surface, and easy to clean., Manufacturer: SDGcfgjW