This is the BernieDawg PuppyDawg "silent" damper cap for the German-made Enders "Baby" Benzin 9063 and 263 backpacking and mountaineering stoves. Also works great on the Coleman 527 military stove. The cap will reduce the volume level of your stove by a substantial amount, about 1/2 of normal sound levels at high flame, more reduction at low flame. It also makes your stove a better simmering stove. Available in several finishes - most of which will change color or darken when exposed to flames. The pictures above show a stainless steel PuppyDawg in a bronze finish after it has been subjected to the heat of the stove burner. The cap finish you choose may look different than the photos.