The CWI GD? - SUPA® Slicklines are engineered for oil, gas, and geothermal applications. Our slickline is manufactured in the USA and the United Kingdom from alloys designed to provide a continuous, weld-free, bright finish wireline available in a variety of lengths up to 40,000 feet. We have corrosion-resistant lines designed to go downhole in sour and sweet environments. Oil and gas well conditions and environments can vary markedly from location to location. With eight material alternatives to choose from, our GD?-SUPA® slickline can handle the harshest of oil, gas, and geothermal conditions, both on-shore and off-shore.