SquarePlug SPS5BK: the smallest soldered 1/4″ straight connector with strain relief created to date! SPS5BK has been designed with the same idea in mind as for the SP400  series, that is, create the least obtrusive, yet full-featured straight 1/4″ jack. A two-screw cable clamping solution sets the SPS5BK apart from its counterparts, as it yields a much more effective strain relief action compared to what the traditional cable clamping way provides
Fits cables up to 5.8mm OD.
For the ideal cable for these connectors use Custom Lynx Professional Unbalanced Patch Cable