8" D1-4 adapter plate semi-finished can be modified to match all kinds of chucks.

Diameter: 8"

Thickness: 1"

With all the 3 camlock pins and screws included.

Buyer has to machine the chuck mounting holes and cut recess diameter on your own lathe to get much better TIR accuracy.

Compatible to chuck recess diameter: 165mm

Compatible to chuck 3 mounting screw holes distribution circle diameter: 180mm