Hey Kurt, the green ones are stone bits right? I must need more coffee because my eyes want me to think it might be craytek...
Number one and 3 (top to bottom) are grinding wheels. Some sort of Silica compounded. As you know I buy by sight as there is hardly ever someone around to speak to me, so I can not give you a proper name for them. I would estimate that number one is around 150 to two hundred grid, and number three is below one hundred (80 maybe?).
