This is the replacement carb cap for the XVape Vista Mini 2. Having spare parts is ideal in case you lose or break the original. This carb cap is made from handblown, borosilicate glass and features a hole in the top to allow your extracts to vaporize properly. The carb cap fits solidly above the heating coil, with an air tight seal. This carb cap is meant for the Vista Mini 2, any use on other rigs or vaporizers is up to the discretion of the customer and is not recommended.