The chuck is made by Narex a make I have not come across. It's well made and they had a load of redundant new old stock with mess 2,3 and 4 chucks with corresponding Morse taper holders in boxes of two.

I put different size drill chucks in the holders for illustration but I can use my Morse 1 drill set if need be.



The unit can be used to swap drills without stopping the spindle but I only date do this at low revs.