Based on this product's specifications, here are some alternatives and similar models
Crimping pliers Knipex 975112 for Western plugs RJ10 RJ11 RJ12 RJ45
Summary description:
Knipex 975112 crimping pliers are designed for crimping Western (modular) plugs RJ10, RJ11, RJ12 and RJ45. The tool enables reliable mechanical and electrical contacts when terminating cables with corresponding modular connectors. Suitable for telecommunications and networking tasks, it helps technicians and installers achieve consistent crimps and faster cable assembly.