I have a bunch of these connectors that i'm making some cables with, i have been using a screw driver to punchdown the wires but its not 'right'. Does anyone know what the connector is called and the correct tool for punching down the wires ?
Yes, those look like MTA connectors of some brand, for which manual punch tools exist.
For good results, you need to use the stranded wire size the connector was designed for.
Thanks guys, excellent info set me in the right direction.