Dophee 6Pcs Butterfly Clasp Decorative Jewelry Chest Box Wooden Case Cabinet Hasp Latch It's a good choice for collection if you are fond of Chinese culture. Material: Zinc Alloys. Box Clasp Dia: Approx 38mm x 38mm(1.50" x 1.50"). Antique Bress Screws Size: 8 x 2mm(0.3" x 0.08"). Size for manual measurement, there may be a 0 to 1 mm error, belongs to the normal phenomenon.