Compact, Rugged design and High Quality. Easy to crimp with hand force. Compatible with all RJ45 Cat 6/Cat 5e/Cat 5 and RJ12/11 connectors as well as all standard modular plugs, except AMP. Built-in security lock for easy storage. The compact, rugged tool is designed to make installs quick and easy. Its non-slip handle with finger grooves ensures you can get a secure, comfortable grip, and the straight-action crimp mechanism requires only minimal hand force. When you're finished, a gun-style lock keeps the tool tightly closed. Crimps 6Pin and 8Pin RJ45 Cat6/Cat5e/Cat5 connectors. Front terminates contacts; back crimps external ground. Terminates to industry-specified crimp heights.