BIGTHUMB 3 Pcs Black Jumbo Permanent Markers: 15mm Wide Tip Thick Acrylic Paint Pen Large Calligraphy Marker for Rock Painting, Poster, Sign, Canvas, Glass, Wood, Ceramic

Customers find these markers to be perfect for signs and posters, appreciating their rich, dark black color and wide writing surface tip. The markers work well and are worth the price, with one customer noting they're particularly effective for yard sale signs. While some customers report they dry quickly, others mention they take a while to dry, and durability opinions are mixed, with some saying they hold up well over time while others wish they lasted longer.