Hardened precision machined and ground High Carbon Tool Steel Lathe Mandrel.
This is old stock and high quality. The other brands on the market are all Chinese made as best i can tell. Made when quality mattered.
This Mandrels is made of hardened tool steel and was accurately machined, hardened and ground to size. Mandrel is slightly tapered with the size marked on the large end.
Used for quick set- up of accurately bored or reamed blanks and castings for pulleys, hand-wheels or hubs, on centers so that the outside diameter can be turned concentrically with the axis of the hole in which the mandrel is fixed.
In use, they are pressed into place with an arbor press then pressed out when the job has been machined. They leave no fixture marks like chucks.