Duratool Punchdown Tool With Cable Stripper Built-In 110 Punchdown Self-Regulate Strip Depth Punchdown Tool With Cable Stripper. Excellent for Cat-5, Cat-5e, and Cat-6 data cable. Built-in 110 punchdown (punch only). Fast and easy to use. Designed to strip twisted-pair UTP/STP data cables (Cat5, Cat 5e and Cat6) and terminate the wires into 110 blocks.