These evidence boxes were designed for strength and security. Pre-scored holes line the bottom of the box so you can quickly tie evidence down with nylon tie-downs. Designed for packaging evidence, such as knives, that must be secured before transport. Securing the weapon in a box at the crime scene can help to preserve fingerprints on the item. Each box measures 31.8 cm x 8.9 cm x 5 cm (12.5 x 3.5 x 2)