The Caravela style mod is made of either stainless steel or brass with mixed accent with a 1:1 replica ratio. Every mod is laser engraved with the ship logo and other markings more like the original. The mechanical mod includes 3 different extension tubes for sizes that will fit for 18350, 18500, and 18650 batteries. With purchase of Caravela clones you will also receive a carrying case which has an embroidered logo.