Below is a video of the product in action please watch to answer any questions! Just copy and paste the link to you tube! https://youtu.be/7GZ0PZjvG7E This is a 3D printed 18v Rigid tool to Milwaukee M18 battery adapter. This allows you to use your Rigid tool with a Milwaukee battery. There are no modifications needed to the tools and NO assembly for the adapter it is completely ready to use. I do not own all the rigid tools so I can’t say it works with all of them but I have listed the ones I know it works with for sure if there are tools that it doesn’t work with please send me a message so I can address or add it to a list of known issues. Tools I have tested and works: R86008 1/2in drill, R84015 1/2 in drill, R864, R844 Sawsall, R849 flashlight, R865 Circular saw, vacuum but panel will not close see pictures, and R0230 Air compressor but you need two adapters. After using the circular saw I have found that you lose depth of cut with different battery sizes. With 2.0 battery not affected. With 5.0 battery depth of cut is reduced from 2″ to 1 3/4″ and for the 9.0 battery it is reduced from 2″ to 1 7/16″. I am trying to see if there is away around this but at the moment I haven’t figured anything out. This listing is just for the adapter no batteries or tools are included. Must remove adapter before charging. Only charge with charger for the new battery you are using. Example nicad/nicad or lithium/lithium. Not responsible for Misuse/tool or battery damageDo not store in above 100 degrees example: hot car with sun beating down For international buyer is responsible for any customs, duty, tariff charges.