The "Big Red" is an easy-to-use professional cable and wire stripper/cutter for most cable types/sizes in the networking world of voice, data and video. Coax cassette blades are pre-set for: RG59 CCTV; RG6 and RG6 Quad; RG7/11. Adjustable stripper for twisted pair: Twisted Pair (Data) PVC & Plenum: Cat3/4; Cat5e shielded; Cat6; Cat6 shielded; Cat6A shielded. Also works with Telephone & Audio (Voice) Round cables.