With a fully ratcheting crimp action, you are assured that each crimp is completed correctly. Replaceable die sets (sold separately) are available for RJ22 (handset style), RJ11/12, RJ45 and 10-pin style modular plugs. The hardened dies provide for a long service life and quality connections. A built in wire cutter makes for faster cable prep with just one tool. Step up to L-com's professional grade crimp tools and start saving time and money.