No need to use a knife, your teeth, fingernails or other items to remove reducers, orifices, or roller tops again!! This metal "key" will work to pop off the following easily: 15 ml bottle reducer, 5 ml bottle reducer, Roller balls 5/8 and 1/4 dram bottle orifices.  You can even use the key to push the dram orifices, roller balls and reducers back on! It has a hole, so you can add it to your keychain and never be without it! Why not attach it to the ring of your key chain? These make great gifts for downline, up-line or any essential oil enthusiast, or why not provide them as a hostess gift? Contents: 1 x oil key (Purple Luster)