It’s 50 percent hydrogen peroxide mixed with 50 percent white vinegar and a teaspoon of salt mixed into a spray bottle. Spray it on bare metal and it’ll rust right before your eyes! If ya hang the part the way it’ll be on the bike the rust will run down and stain the paint as to appear it was on the bike it’s whole life. If you spray it a couple of times a day and allow it to sit for several days the rust will set in solid. The hand held propane torch will dull out brand new paint and make it look old. This takes a bit of practice todo cause there’s a fine line between to much heat and blistering paint. Recommend trying it on something that doesn’t matter first!!