Cable Tester +Crimp Crimper +100 Rj45 Cat5 Cat5e Connector Plug +5 Meter Network Cable Network Tool Set This Cable Tester used for Test correspondingly double-twisted cables 1, 2, 3, 4, 5, 6, 7, 8 grounds Capable to judge wrong connection, short circuit and open circuit Cable Tester for RJ11, RJ12, RJ45, Cat 5e, Cat 5, 10/100 Base-T, AT&amp;T 258 A, TIA-568A/568B .etc Suitable for Cat5 and Cat5e cable with 8P8C, 6P6C plugs It won&#039;t damage the shelled-wire and work convieniently with high efficiency