THIS AMEC SPECIAL SPADE DRILL HOLDER, MANUFACTURED BY ALLIED MACHINE & ENGINEERING, FEATURES MODEL 120717-74. THE HOLDER HAS AN OVERALL LENGTH (OAL) OF 8.25 INCHES. IT IS DESIGNED WITH A 1.5-INCH DRILL DIAMETER AND A 1.5-INCH SHANK DIAMETER. THE SHANK INCLUDES A 0.5-INCH BORE. THE DRILLING TOOL INCORPORATES A STRAIGHT, 2-FLUTE DESIGN.