Mako Products is your exclusive source for the Superlok I-Fitting and Mako Valves. Our Superlok fitting provides an industry changing solution by incorporating a patented indicator ring on each fitting. As the fitting nut is tightened, the indicator ring simply pops off of the fitting at the exact point of perfect torque and compression. A user can see, hear and feel the precision connection being made. A blue gap gauge is also installed on every fitting as a secondary confirmation that the fitting has been installed correctly. With this technology, even an unskilled worker can be guaranteed a precise connection every time. By taking the guesswork out of installing fittings correctly, Superlok has created the safest, most reliable fitting line in the market!