This is the blade side PCB holder for 7/8″ thin walled blades designed for ShtokCustomWorx NPXL purchase here https://tinyurl.com/npxlbladeside .
Machined from clear acrylic. It is not compatible with any third party PCB. It can also be used for the blade side PCB with LEDs to make a quick NeoPixel blade plug!
The PCB is press fit but it can be further secured using a small dab of hot glue or similar glue.