The 6426E from ARRA is a Mechanical Phase Shifter that operates from DC to 12 GHz. It has a minimum phase adjustment of 90°/GHz (540° at 6 GHz) with an insertion delay of less than 1.49 ns and an insertion loss of less than 0.75 dB. The phase shifter can handle up to 100 W of average and 5 kW of peak input power. It is available in a module that measures 8.00 x 6.125 inches with SMA-female (N-Type also available) connectors. It can be controlled using a 1/4" Non-Translating knob.
