The GRASS GPS brings you the TIOMOS Hinge Calculator. Enter information about your cabinetry application such as Cabinet Type, Angle Opening, Closing Option and more. Then press the "Calculate" button. Youll get product numbers, cup drilling distance, overlay and base plate height. In addition, youll get a picture of the products chosen for you. If youre new to the TIOMOS Hinge System, visit the GRASS website at www.grassusa.com for additional information.