Space Machine will custom fabricate waveguide twists covering the waveguide sizes WR10 to WR430. Degree of twist, length and flange types made to customer specifications. VSWR is less than 1.10:1 over the full waveguide band. SME standard twist direction is clockwise*. To order counterclockwise** twist add a dash and “CCT” after Part Number. Example: 90-WTW62-6.0B0102-CP-CCT * “Clockwise Twist” – when the assembly is held vertically and viewed from above, the twist of the tubing progresses in a clockwise direction from top to bottom. ** “Counterclockwise Twist” – when the assembly is held vertically and viewed from above, the twist of the tubing progresses in a counterclockwise direction from top to bottom. wr* – add HW, RH or TW to the part number if ordering heavy wall waveguide tubing (HW), reduced height waveguide tubing (RH) or thin wall waveguide tubing (TW).