No.1 Morse taper tailstock rotating centre - suitable for wood or metal lathes.

For a No.2 Morse taper rotating centre see: https://store.lathes.co.uk/parts/tailstock-rotating-centre-no-2-morse-taper

For a No.3 Morse taper rotating centre see: https://store.lathes.co.uk/parts/no-3-morse-taper-rotating-centre