The 20 Propane/Butane Gas Pigtail, featuring a 21mm clip-on connector and a W20 female fitting. This high-quality gas pigtail is designed for seamless connection to your propane or butane cylinders, ensuring a secure and leak-free setup. Approved by Calor Gas for use with Propane (LPG). Versatile Compatibility: Suitable for both propane and butane gas applications, providing flexibility for various gas systems. 21mm Clip-On Connector: Ensures quick and easy attachment to gas cylinders, saving you time and effort during installation. W20 Female Fitting: Compatible with standard gas appliances and regulators, offering a secure and reliable connection. Durable Construction: Made from high-quality materials to withstand regular use and harsh co