I currently have a tool-kit with all the sizes of socket wrenches I need. I was wondering what size I should use. I also was wondering what size would be the best for a homemade screen. I cannot use A. Faucet screen B. Anything that involves going to a headshop/any shop So basically I need an array of homemade things that I could use for a screen. Also, please nothing that releases any dangerous chemicals.