VEVOR Metal Lathe 10" x 30" 1100W Benchtop Lathe Machine with 2-Axis DRO, for Metalworking Turning, Linear Scale & Digital Readout, Reversible Direction, Variable Speed 3000 RPM Max, with Metal Gears

The spindle through-hole diameter is 38 mm.

The size is the tailstock, and the spindle taper is MT5 If this answer does not resolve your current issue, please contact us again for assistance.