THIS ISCAR DZ1875-4219-150-4 IS AN INDEXABLE DRILL FEATURING A 1.88-INCH DRILL DIAMETER. IT HAS A SHANK DIAMETER OF 1.5 INCHES AND A SHANK ARBOR DIAMETER OF 0.5 INCHES. THE OVERALL LENGTH OF THE TOOL IS 8.75 INCHES, WITH A SHANK LENGTH OF 2.75 INCHES AND A DRILL LENGTH OF 6 INCHES.