The S. U. R. &R. AC38CB 3/8-Inch A/C Compression Block Off is specifically designed for 3/8-inch sizes. It also comes included in the AC80 Compression Block Off Kit. S. U. R. &R. is a subsidiary of Husky Corporation and is a leading supplier of vehicle fluid line repair solutions for the Automotive Aftermarket Industry. Specifically designed with the technician in mind, S. U. R. &R. provides an extensive line of superior, cost-saving fluid line repair solutions that are easy to use, require no specialty tools and, above all else, saves time and lessens the cost of repair. In addition to affordable automotive fluid line repair options that install quickly and are designed to last, all of S. U. R. &R. s products are backed by an unsurpassed to complete satisfaction; included are kits for brakes, fuel, air conditioning, power steering, coolant, transmissions, and professional quality and technically superior tools. Backed by a skilled team of professionals committed to the total satisfaction of both repair facilities and vehicle owners alike. S. U. R. &R. will meet or exceed all OEM expectations on domestic and foreign vehicles and applies first-hand experience, ensuring quality products that get the job done right.