Are these worm drive motors ok?

[Mishap]

Hi,

I am looking at motors to start a project & wondering ifthe tech gurus could shed some light on whether these are ok?
www[dot]ebay[dot]com[dot]au/itm/Worm-Drive-Motor-12V-200W-180-RPM-20Nm-Torque-chair-scooter-/201554781684?hash=item2eed99e5f4:g:XEEAAOSwKtlWoGto
Note url changed as im anew user remover [dot] & add .
if these are no good what specs shiould i be looking for? any help is apprciated

peace out