New 360 degree clear site window for easy visual insertion verification before compressing the connector. New internal design for better RF performance and easier cable insertion. Nickel-plated, brass-construction for superior corrosion resistance Moisture-inhibiting rear seal design For 5MHz to 3GHz applications including CCTV and Broadband Color coded band for series identification: Red - RG-59; Blue - RG-6/6Q Standard ¼" x ¼" cable prep/strip required Use with 30-793, 30-603, 33-632 compression tools.