EXCELLENT toner and tester. I didn't like the cover. VERY hard buffer material in the housing. I couldn't keep wires in remotes in a case. What I don't like is the time it takes to install and remove parts and components and plug and unplug connection cables. Also shorted a patch cord, should be nine including the master unit but had to add another cord for the master unit. I ended up buying a Frys Platt 507 case to store the equipment and added field toner so the tester and probe could stay in the head.