2015 the best selling dimitri black box mod with silver plating copper contacts

Features of  mod dimitri box mod                                           

Full mechanical box mod
Full alloy casing in hard chrome finish
Gold plated Dimitri
Ergonomic style
Delrin insulators
Silver plating over pure copper  contacts (negative)
99.9% copper positive contacts
Adjustable negative battery contacts
Floating positive pins
510 connector
Dual 18650 battery configuration 

The pictures of mod dimitri box mod