The Ridgid 91037 is a 3/8" integral-wound cable repair coupling. This coupling is for use on a 3/8" integral-wound cable and includes a fitting for repairing cable ends. Why do so many professionals choose RIDGID tools? The answer is simple, trust. Millions of RIDGID tools go to work every day in plants, on construction sites and in countless other harsh environments. One of the design parameters for developing RIDGID tools is efficient operation. We engineer ease-of-use into every product. And, we include innovative features to ensure that our tools and machines get jobs done as quickly as possible without compromising quality.