This item is a Sears Craftsman Vertical Milling Column, a vintage attachment used to convert a lathe into a small milling machine. Comes with Center Drills, Set of 5 1/2 2 Morse Taper (2MT) Collet Type: 2 Morse Taper (2MT) Round Collet. Size: Designed to hold tools or workpieces with a 1/2-inch diameter shank. Material: Typically made of high-grade tool steel that has been hardened and precision ground for accuracy. Features: Includes a 3/8-16 internal thread at the end for use with a drawbar. Designed for high concentricity and minimal runout, ensuring precise alignment during high-speed operations.

Boxes are a bit beat up with writing, labels, even a tear or two but each has been inspected and verified as undamaged then resealed. Photos show holder R3428 and the labels on other boxes. I have a total of 14 holders with 9 different part numbers,,, see list below which will be updated after each sale. I do not know which lathe machines these are used for. List of Methods Machine Tool Holders. HOLDER BORING 2 FVT600 FLR. HOLDER U DRILL 1.25 FT200/350 FLR. DOUBLE BORING HOLDER 1.25 I. DOUBLE BORING HOLDER MODIFIED FOR COOLANT. TURN & BORE HOLDER, 3/4″ & 1″ SHANKS. DOUBLE TURNING HOLDER, 3/4 SHANK. TRIPLE BORING HOLDER, 1.00 I.