4 Core Boro (Parallel/Opposing Legs - 3mm/.53ohm) - Ohmcentric31/40 N80 5 wrap - Set of two coils (.53 Single Coil) Available in Parallel legs or Opposing legs 31/40 N80 4core Boro slammers (For regulated boro) Bored on the typical alien builds for your regulated boro? Looking for absolute pure flavor in its rawest form? Enjoy vaping a little higher wattage (around 37-45watts)? These....these are the deal. One of the most unique vaping experiences you can have from your boro atomizer, amazing flavor, amazing clouds, all around exceptional vape quality. Note: This coil used to be advertised as .52ohm