HME Products Seal-Tite Drop Wick (Pack of 3), Olive Easier to hang - larger open v-shape design cradles the branch and will not fall off Rain shedding design - umbrella shaped roof protects the wick from falling moisture Built-in adjustable wick exposure feature allows the wick to be exposed just enough to disperse the scent 100% air tight - double o-ring design ensures a 100% air-tight seal Easy to dip - the hanger easily separates from the container to allow the wick to be dipped into a scent bottle