TO USE ON LAN AND TELECOM SEATING 4 PAIRS UTP (24 AWG) AT A TIME. SUITABLE FOR BOTH 110 TYPE CABLE SIDE AND CROSS CONNECT SIDE TERMINALS BLOCKS. THE TERMINATION BLOCK HEEL WITH BLADES ARE CHANGABLE AND REVERSIBLE. ONE END FOR SEATING AND CUTTING OFF WIRES, AND THE OTHER FOR SEATING WIRES ONLY.