Reply by AHuxley

It actually seems that most of the Asian imported keyless chucks with integral tapers are built the same way, they are designed to be used with a spanner, but it is usually included, they should have told you that not the non-sense about holding the pulley (but a DP with a quill lock would work too). If you could get your money back I would say to get a keyless chuck and the correct taper from Shars, they have better quality imported chucks and generally cheaper. You don’t need an integrated taper, the difference between TIR on an integrated taper and good taper/chuck is a non-issue in wood drilling.