THE ITEM IS AN ALORIS DA4Q 3000 BORING BAR HOLDER WITH A KENNAMETAL KM63-NCM-EF FLANGE MOUNT. KEY DIMENSIONS FOR THE HOLDER ARE H: 4-1/2 INCHES (4.5"), W: 4-3/8 INCHES (4.375"), AND A LENGTH OF 6 INCHES (HOLDER ONLY) TO 9 INCHES (ENTIRE PIECE). IT FEATURES A 3-INCH BORE AND A 3-1/2 INCH (3.5") WEDGE. THIS TOOLING COMPONENT IS SUITED FOR TOOLING APPLICATIONS.