The Jobu Design 2.5" Quick Release with Oversize Knob is a standard Arca-Swiss compatible quick release that's used on nearly every product in the Jobu Design line. This version includes a captive, premium Elesa knob for increased torque. Continually refined over the years, it's smooth, robust, free of sharp corners and useable in any conditions due to the stainless steel hardware and springs used internally.
You could use one of these to upgrade an old Jobu gimbals head, convert a head into a side mount (i.e., a BWG-HD3 can become a LW3 with this kit), or--create your own custom project.
Two holes spaced 0.6" apart make for a solid non-rotating platform: once installed you can stop worrying about your equipment loosening up from rotation and vibration. A much better solution than the typical single-hole and slot configuration.