Thank you jim, uglydog( i feel awkward calling you that, Even though I know It is just your name and not meant as a derogatory remark), firestopper and every one else for chiming in with awesome and very imporrant advice.The real protection is needed at the cylinder (ultimately) as this is your fuel supply. I personally use both (torch and regulator ends). If you only protect the torch end and burn the hoses then you have no protection at the fuel source. These devices are very affordable and are different from one another. In 33+ years, I have never burned through a hose but its like wearing a seat belt, when you crash it can save you.