1.BZL Gas Nozzle MB15 Tapered 145.0123 2.GLOOR Gas Cutting Brass Nozzle 3.GLOOR Gas Cutting Copper Nozzle 4.H07-40 Copper Gas Cutting Nozzle 5.Natural Copper Gas Roast Tsui 6.Natural Brass Gas Roast Tsui 7.44 Type Gas Cutting Nozzle 8.6290 Type Gas Cutting Nozzle Because of these differences, there is the possibility of having two or three different types of Cutting Torches in your kits. Make sure that the cutting tips match the cutting attachment and ensure that the cutting attachment matches the torch body. Figure 4-13 shows the different styles of tips, their orifice arrangements and their uses. The tips and sears are designed to produce an even flow of gas and to keep themselves as cool as possible. The seats must produce leakproof joints. If the joints leak, the preheat gases could mix with the cutting oxygen or escape to the atmosphere, resulting in poor cuts or the possibility of flashbacks. www.edaweld.com