THE BLOCK TURNS AND LOCKS DOWN LIKE IT SHOULD. THE MOUNT HOLES ON THE BOTTOM ARE 3 1/8 APART O. THE CENTER STUD IS 1 5/8 X 1/8H APPROX. THE DISTANCE FROM THE BOTTOM OF THE BASE PLATE TO THE CENTER OF THE SLOT FOR THE TOOL HOLDER IS 2 3/4 APPROX.
The size of the main block is 58 x 58 x 36mm high with a stud hole (11.5mm). Premium Quality quick change toolholders for lathes.
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Made in the USA by Aloris Tool. Quickly and easily installed on the lathe, for a wide range of operations - from fine precision work to heavy duty cutting. For lathes with 17" to 48" Swing.