We Prepare these with Fully Craftsmanship. We use manually Dying and Antique process to burn and other Techniques. These are Reproduction Antique finish Copper & Brass metal used. Premium quality well made deep sea divers helmet replica. Metal : Solid Steel Iron, brass. Finish: As shown as picture. Approx Size: 16″ x 12.5″ x 17 / 40 x 32 x 42cm. Weight: 7.5 Kg (approx). Model: Boston Mark V. Usage : Home Decorative, Desktop Decorative. Table Decorative Collectable Items.