THIS IS A GUHRING INDEXABLE INSERT DRILL, MODEL 5242 - 20,005. IT FEATURES A DIAMETER RANGE OF 19.01 MM TO 20.00 MM. THE SHANK DIAMETER MEASURES 19.05 MM (3/4"), WHILE THE BODY DIAMETER IS 18.70 MM. THE OVERALL LENGTH (OAL) IS 138.00 MM, WITH A SHANK LENGTH OF 50.00 MM. THE MAXIMUM DEPTH CUT IS 84.00 MM, OR 3.310 INCHES. THE TOOL USES AN INSERT SCREW OF F/G WITH A SERIES/CODE: 1071 3.00.