vinyl shutter fasteners, 3 inches long. Compatible with all types of vinyl shutters and can be used on wood, vinyl, aluminum, stucco, brick, and masonry. Safe and Sturdy: These fasteners have a large head and reverse-circled barb that hold them firmly in place without wall studs. The in-mold black finish blends easily with most shutter styles. Good Material: Made from vinyl designed for outdoor construction, these shuttersa fasteners for outside resist UV rays, , cracking, and fading, ensuring durability for decades. Easy Installation: These push-button vinyl shutter pins make mounting quick and easy. Just pre-drill the holes, line up the shutters, and tap the fastener pegs in with a hammer. Application Guide: These plastic shutter screws fit most standard shutter installations. For results, use 8 fasteners per pair for shutters under 55 inches tall, and 12 fasteners per pair for shutters over 55 inches. Color: Black Material: plastic Package Contents: 38 x Shutter Screws Exterior 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.