Can Not Be Used On Aluminum Alloy of Tin, Copper, Silver, and Bismuth that works much like 50/50 solder Used for tin plate work, sheet metal seaming, and hot water heating lines Works with any high grade paste or liquid flux and a standard propane torch Oatey No.95 tinning flux recommended Provides excellent flow and fill characteristics 420 to 460 degrees F melting range; 0.117 in. diameter Meets requirements of Safe Drinking Water Act for use on copper potable water lines 2-3/8 in. blade length