This is a tray to use for an 18650 battery holder. It has 4 channels for holding 8 AWG (3.5mm diameter) copper wire. I will be featuring this in my ebike project video series on YouTube on my channel Power Playground. I also have a small FreeCAD tutorial where I show how to make a specific part of this model. I have uploaded a 3x8 tray model and a 4x8 tray as well as the FreeCAD files for both! FreeCAD Tutorial: https://youtu.be/enenIERNC7Q FreeCAD Tutorial Playlist: https://www.youtube.com/playlist?list=PLMjfntGK5aY4qRy4QJr6YiAilvcR90qDj Ebike Project Playlist: https://www.youtube.com/playlist?list=PLMjfntGK5aY6NjuNRu5GaXr_bncQPM0ES Subscribe to https://www.youtube.com/user/powerplayground so you don't miss out on my latest videos!