Hcigar Hammer Mod Clone The HCigar Hammer mod clone also known as the "Chammer," is a beautifully designed 1:1 ratio unit weighing at just 320g (11.1ounces). Made from full stainless steel, the mod includes a 2pc tube to use with either a 18350, 18650 or 18490 battery size. The mod also has intricate laser etched design logos and individual numbering for added appeal. **We suggest on 18350 battery sizes to use flat top versions for better fitment. Features: 1:1 ratio clone Full 316 stainless steel Lock protection system 18350 / 185000 / 18650 battery fitment Air holes on bottom for batter ventilation 2pc extension tube (18500 / 18650 battery sizes) Silver plated contacts Pin has small nipple for better contact point Detailed logo engraving Individual numbering Includes: Hammer Unit 2 x Extension Tubes HCigar Gift Box Note: please DO NOT stack batteries as this is a mechanical mod with no circuitry, you will effectively double your voltage which can and will destroy attached devices.