Converts Type 1 Connection x 1/4 Inch Male Pipe Thread to QCC1/Type1 Excess flow protection-Safety plastic cap pops off if damaged stopping flow of propane High quality solid brass construction makes it corrosion resistant Connect a 20lb-30lb propane tank to your regulator/hose assembly Easy to connect attachment, no tools required This propane adapter convert your QCC1/Type 1 Male and POL Female Connection to a 1/4inch Male Pipe Thread, makes changing propane tanks so much easier, solved propane flow issues. The threads are hand screw- onto the gas tank without any tool. Male Connection: Outer QCC1 / Type 1 Male Thread, Inner POL Female Thread. Female Connection: 1/4 inch Male Pipe Thread, Standard Threads, The Threads Are Perfect Per Npt, The Same Size As A Refillable Propane Tank. The Gas Direction Is From 1/4inch To QCC1,1/4inch Npt That Screw Into A Female Npt Fitting. Percect For Hooking Your Small Propane Bottles Up To The Larger One. Colour:Photo Color Material:plastic+brass