Wing Nut, Clamp Connection Type Wing Nut, Clamp Type Double Hinged Heavy Duty Clamp, Body Material Stainless Steel, Material Grade 304, Compatible Tube Size 2 1/2 in, Compatible Tube Wall Thickness 0.065 in, Standards ASME BPE, Maximum Operating Pressure 400 psi, Maximum Operating Temperature 250 Degrees F, Minimum Operating Temperature 70 Degrees F