Converter & Adapter
Glass on Glass jionts Converter or adapter attachments, we call all joints from 18 mm female to 18mm female, 18mm female to 14 mm female and 18mm female to 14 mm male, and 14mm male to 14mm male ,and 14 mm male to 14 mm female, 14mm male to 18mm female ,14mm male to 14mm females.