Aiding in refilling your empty, one pound cylinders, this solid brass connection, can help your refill in under a minute! WARNING: This product can expose you to chemicals including lead and lead compounds which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information visit www.P65Warnings.ca.gov Female Throwaway CylinderThread and Soft Nose P.O.L. Refills 1 pound bottles in 1minute or less NOT AVAILABLE FOR CANADA