Are you dealing with structured cabling? Do you lack quality equipment? It does not matter because you can have a handy briefcase containing everything you need neatly together. The set consists of crimping pliers 8p+6p (RJ45 + RJ12), trimming tool, tester and connectors.
The tester has an LED on both the base and the add-on module, allowing for interrupted line, short-circuit, crossover signaling, and testing of shielded cabling.
Crimping pliers 8p+6p (RJ45 + RJ12)
RJ45 connectors (8p8c plugs) 30pcs
RJ12 connectors (6p6c plugs) 30pcs