Product review (5 stars): Be patient, use penetrating catalyst first
This tool is needed to remove the burner securing rings, its a must, don't be impatient. if your stove is old and lots of greese and crud the use PBR penetrating catalyst, soak the rings do not use a hammer once you start you will have to use a bushing cutter to cut the brass ring off, jsut be patient, the rings are not actually put on tight they are just gummed up.. also industrial degreaser or brake clean might get the grime off then penetrating oil. the tool is stronger than the brass rings but it will bend if your rings are stuck.. I read the below reviews, being a long time mechanic and machine shop person i again suggest using the penetrating oil and wait , even a day then use heat, propane torch  but don't bust out the hammer just yet.. will be a bigger issue to deal with damaged threads and more parts. Also when we ordered the conversion jets they came in teh wrong bags , big jet big burner, little jet, little burner.. use your commone sense and make sure your install all parts correctly.  good luck our dacor conversion to propane went well!