Gone are the days of trashing your 1 Lb propane bottles to buy new full ones. With this adapter you can refill your 1 Lb bottles from a 20 to 30 Lb bottles typically used for gas grills etc. To maximize filling you can put an empty 1 Lb bottle in a fridge or freezer for several minutes before filling. This will help any residual gasses to condense to liquid allowing more free space for new gas vapor to enter the bottle.
Weight - 6 ounces