STRONG MATERIAL: Foam board fasteners are made of metal, the outer surface is treated with anti-rust, sturdy and durable, not easy to deform or rust. EASY TO INSTALL: The board washers have grooves in the middle with drive screws, and raised on the back side, which can be inserted into the surface of the backing board to play a role in fixing, which can be easily done by one person. PRACTICAL: These foam board fasteners are the perfect fastener kit for securing and installing foam boards, backsplashes and more. They are efficient and practical, bringing great convenience to your daily life. VERSATILE USE: These foam board washers are suitable for a variety of installations including home renovations, schools, hotels and other infrastructure installations, saving time and labor.<br><br>Colour:As Shown Material:Metal<br><br>Package Contents: 150 * screws 150 * spacers<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.