I designed these Neopixel hilt side PCB holders to sandwich in-between the blade holder and the inside of the emitter on the SK2 saber, creating a clean and easy-to-install part. No drilling and no set screws! Simply solder your wires to your TCSS hilt side PCB and then slide it through my adapter and you are ready to move on with your installation. These are designed for a 1" blade.