Price For: Each Includes: 4 Rods; 1 Glass Tube Standards: ASME Max. Temp.: 300 Degrees F Max. Pressure: 400 psi Number of Guard Rods: 4 Body Material: Borosilicate Glass, Bronze Rod Item: Red Line Glass Rod Kit Glass Tube O.D.: 5/8" Center to Center Length: 38" Glass Length: 36" Country of Origin (subject to change): United States