2-Prong, 2 Morse Taper British made drive centre fits most lathes. 1" across the blades Made by Planet Plus (Rotur brand) in quality steel. Better than a 4 prong if the wood is not square at the ends.
Not sure what taper you have? Measure the hole size of the taper socket. The diameter of the hole at the largest point is approximately
1 Morse Taper 12mm
2 Morse Taper 18mm