The Monoprice RJ - 45/RJ - 11 Modular Crimping Tool is an essential tool for any networking professional or DIY enthusiast. With an 8 - inch length, this crimping tool is designed for ease of use and precision. Made from high - quality carbon steel and plastic, it ensures durability and longevity. The locking feature provides added safety during use, making it ideal for crimping RJ - 45 and RJ - 11 connectors. Whether you're working on a home network or a professional installation, this tool is perfect for all your crimping, cutting, and stripping needs.