Screen tubes are from a 300 series stainless steel. The nominal diameter of the screen listed indicates the matches rod diameter.
* Includes extension tubing
                    Unit of Measure
                    
               
        
            
                                                                                Units Per Package | 
                                                                        N/A 25 | 
                                                                                Size | 
                                                                        N/A 3/8" x 8" * | 
                                                                                Drill Diameter | 
                                                                        N/A 1/2" |