Apollo Microwaves WR-187, U-Bend WaveguideCondition:* New Surplus Stock, No OEM Packaging. As Pictured. Additional Notes:* Wavguide Size: WR187* Frequency: 3.95 – 5.85 Ghz* VSWR: 1.05:1* Insertion Loss: 0.15 DB* Material: 6061 ALUMINUM OR COPPER/BRASS* Finish: ANODIZE (ALUMINUM) OR PAINT (COPPER/BRASS)* Tolerances: 0″ To 12″: 0.030″ 12″ To 24″: 0.035″ 24″ To 48″: 0.040″ 48″+: 0.050Apollo MicrowavesWGCCFAU2890