Atomizer power tube and jets are CNC-machined from brass for consistency and accuracy Eliminates spitting and popping through the carburetor Converts fuel from a squirting liquid to a fine mist Made in the U.S.A. Covered under the following U.S. patent #s: 5,233,180/5,562,868/5,662,836/5,810,264/6,270,060.. POWR TUBE KIT HSR 42/45