Model 2393-3F stainless steel tip tube is 15" in length and curved 70 degrees. It has 1/2" - 25 (M) tip tube-to-mixer and tip tube-to-tip thread connections. Multiple heating tip assembly configurations of mixers, tips and tip tubes can be used with various Harris handles. Separate couplings and adaptors may be needed to for certain assemblies. This tip tube is designed to be used with Models 2290 H & HPM heating tips and RBA & RBP flame cleaning heads using alternate fuels and acetylene.