Made of Brass. Easy to install with handheel grip. No need to buy new small propane tank. The steak saver gas grill adapter have male and POL female thread. Fit for QCC1/POL hose and regulator. You will never worry over-fill your small tank. The adapter will cut off gas flow automatically when pressure is reached (rubber ring allows for proper seal). Great for Ice Fishermen, , Outdoorsmen, and all Campers and power outages, tailgaters, Caterers, Campers, and anyone who on the grill/has cookouts. Great for your BBQ, camping stoves, propane heater and other propane appliances. CAUTION: Due to the highly gases, you MUST be outdoors to refill your 1 lb cylinder tank. Stay clear of flames and . Adapter for 1lb to 20lb propane tank, no need to buy a heavy tank for big grills. Steak saver adapter: One end for 1lb cylinder and the other end fits for POL/QCC1 hose or regulator. Allows 1lb propane tank to work for full-size grill or burners when the large propane tank is run out of fuel. Easy to hookup and ensures comfortable cooking experience. Refill adapter: One end is QCC1 regulator and the other end fits for cylinder with 1/20 thread. Holds tight and connect well to propane tank and hose, no worry about gas leakage. Solid brass, not wear down and fall apart for reliable use. Note: When refilling your 1lb tank, make sure that the 20 lb propane tank is upside down. Please make sure that the thimble of the adapter must fully contact the thimble of the tank. 1.Attach the adapter to your 5lb to 50 lb propane tank. 2.Attach your 1 lb. tank to the adapter. 3.Pick up your large tank and turn it upside down and rest it securely on the corner of your picnic table. 4.Open the propane valve and shut it off when the flow of liquid propane stops. 5.Turn everything right side up and remove the 1 lb. cylinder. Notice: For maximum filling, place your cylinder tank in the freezer for up to 30 mins before filling it. Colour:Brass+black Material:brass Package Contents: 1 x Propane Refill Adapter 1 x Round Propane Adapter Converter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.