These are brand new Thermacell Replacement cartridges (pair). There are two per package.
As thousands of repeat customers will tell you, ThermaCELL is unbeatable at repelling mosquitoes, black flies, and no-see-ums. Tests by the US Army have found ThermaCELL to be up to 98% effective against mosquitoes, black flies, and no-see-ums within a 15 ft. x 15 ft area. The 2-Butane Refill comes with two 12 hour butane cartridges (repellent mats not included) and lasts up to 24 hours. For butane cartridges and repellent mats, please purchase a ThermaCELL Mosquito Repellent Refill.
Each butane cartridge lasts for 12 hours (24 hrs. total)
Contains 2 Butane Cartridge Refills
Works for all ThermaCELL mosquito repellent products
Perfect if you run out of butane before you use all repellent mats
MFG Brand Name : ThermaCELL
MFG Model # : C-2
These also are used for the ConAir Cordless Curling irons. They are both the same device with different labels.