Crystin Manufacturing, Inc. based in Odessa, Texas, specializes in producing technically-advanced Kelly and Top Drive Valves that are widely recognized in the industry for their reliability. They offer a range of valves including Kelly Valves, Top Drive Valves, Tubing Valves, and IBOP Dart Valves, all made from durable materials for long-lasting performance. Additionally, Crystin provides drilling string services and API re-threading on drill pipe, drill collars, and subs through its sister company Fishing Tool. Their services also include manufacturing various subs such as slick saver subs, run-in subs, and pump joints, ensuring quality and precision in the oil and gas industry.