These buttons are handmade using a professional button press and are available as either 18mm or 23mm button size with a nail back for driving into wood.   The nail leg is 3/4".

Made with good quality silver crushed velvet fabric and hardened tempered steel nail buttons for driving into wood, the small corrugations allow for easy driving and help prevent the nails from pulling out. The buttons are driven through fabric and foam directly into the frame.