RJ45 RJ11 RJ12 LAN Network Tool Kit Cable Tester Crimp Crimper Plug Pliers 9in1 Dimensions: 4 " x 4 " x 1.20" (10.5 .5 cm) This Network Cable Tester is for test of RJ11, RJ12, RJ45, 10/100 Base-T, TIA 568A /568B AT&T 258A, BNC, Cat 5, etc This device be separated into two units: Main Unit and Remote Unit The Remote Unit allows you to test cables installed far away either on patch panel or wall plate with the Auto-Test For cuts, strips and crimps for 8P8C/ RJ-45, 6P6C/RJ12, 6P4C/RJ-11, 4P4C & 4P2C in one tool