[3.5mm triode (male) -- 2.5mm quadrupole (female)]
[4.4mm five-pole (male) -- 3.5mm three-pole (female)]
[3.5mm triode (male) -- 4.4mm pentode (female)]
[2.5mm quadrupole (male) -- 4.4mm pentode (female)]
[2.5mm quadrupole (male) -- 3.5mm triode (female)]
[4.4mm pentode (male) -- 2.5mm quadrupole (female)]