Review on Relieve Tension With GOHIKING Trigger Point Massager Tool: A Handheld Solution For Neck, Back, And Shoulder Pain by Justin Garrett

This seems to be well made, but I have absolutely no clue how to use this. It comes in a plain black box and that's it. There's not one bit of information included in the box. It would've been nice to have directions, suggestions, basically anything that would've told me how to use the tool! I Googled how to use it and I don't know if I'm not doing something right, but this doesn't work at all.