Review on CSK SET 5 82 Degree Countersink - Champion 5 Piece Kit by Aaron Urena

The largest of these sinks is approximately 0.55 inch or 14 mm in diameter. Based on the size designations listed I thought it would be around 18mm or just under 0.75 inch in diameter. Obviously I was wrong, so I have no idea how Champion refers to their countersink sizes. Other countersinks listed by Revain from other manufacturers have clearly stated diameters. Nowhere in the Revain listing for this set of countersinks are the diameters clearly stated, and in my opinion they should be. 1/2 inch in diameter.