This is for 4 pieces of W.L. Fuller countersinks-- all have tapered drill bits & come with stop collar for depth -- 1 piece each of --(C12M -7/32" bit) -----(C8M-11/64" bit) -- (C6M-9/64"-bit) ---(C4M-7/64" bit) -- All are made in the United States--Will ship with the USPS