[Size] - Total Size: 33 x 28 x 12mm / 1.29" x 1.10" x 0.48" (L*W*H); One complete lock set has 4 mounting holes, Hole Diameter is 3mm / 0.12inch. [Material] - Made of good quality Zinc Alloy in silver tone , corrosion-resistant and anti-rust. Durable and sturdy. [Mounting] - The Clasp has 2 parts. First, use screws to fix the part (with hook) on the correct position of box; Second, put the other part (with hole) on box and keep them locked well; Finally, fix the part (with hole) with screws. [Applications] - These antique hasp clasps work great for small projects, wooden boxes, antique drawers, cabinet doors, doll houses, homemade jewelry boxes, trinket boxes, gift boxes, etc. [Note] - Package: 2 x Left Latch. Mounting Screws are not included here. It is made of thin material, suitable for jewelry box and small cabinet with less strength and locking force.