2.5mm

2.5mm Mono Jack, Panel Mnt, Isolated 70-626 $1.95	2.5mm Chassis Mt shielded Stereo Sbumini Phone Jack 666JP $3.44	2.5mm In-line Submini stereo Phone Jack (2) pk 666VP $2.95
2.5mm Mono In-line Sub-mini Phone Jack 660VP $1.95	2.5mm Mono Jack, closed circuit 660JP $1.95	2.5mm Mono Sub-mini Phone Plug 660PP $2.91
2.5mm Sub-mini stereo Phone Plug (2) pk 666PP $2.95

Ace Electronics