You are on the right track, but the $50 connecter is not going to fit his spindle connector, but the $10 one will are they as good yes they are they are not finished as well but will do the same job, I have used both, this type of plug are mostly used in the plastics industry for all the heater and mold connections, I have some 4 Pin 24 pin 48 pin I use in stock all the time