THIS IS A KENNAMETAL MODEL NSL204D TOOL HOLDER. THE UNIT FEATURES A 1.25 INCH SQUARE SHANK, WITH BOTH SHANK HEIGHT AND SHANK WIDTH MEASURING 1.25 INCHES. THE OVERALL TOOL LENGTH IS 6 INCHES, WHILE THE HEAD LENGTH IS 1.38 INCHES. KEY DIMENSIONAL SPECIFICATIONS INCLUDE AN F DIMENSION OF 1.5 INCHES. THE TOOL HOLDER HAS AN END CHAMFER OF 0.54 INCHES AND A MAXIMUM CUTTING DEPTH OF 0.294 INCHES.